( | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | − | 4000 | × | 3 50 | ) | ( | 1 | − | 1 4 | ) | − | 30 | × | 100 | × | 2 25 | ) | ÷ | 500 | = | ( | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | ) | ( | 1 | − | 1 4 | ) | − | 30 | × | 100 | × | 2 25 | ) | ÷ | ( | 500 | + | 4000 | ÷ | 16 | ) |
方程两边同时乘以: | ( | 500 | + | 4000 | ÷ | 16 | ) |
( | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | − | 4000 | × | 3 50 | ) | ( | 1 | − | 1 4 | ) | − | 30 | × | 100 | × | 2 25 | ) | ÷ | 500 | × | ( | 500 | + | 4000 | ÷ | 16 | ) | = | ( | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | ) | ( | 1 | − | 1 4 | ) | − | 30 | × | 100 | × | 2 25 | ) |
( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | − | 4000 | × | 3 50 | ) | ( | 1 | − | 1 4 | ) | ÷ | 500 | × | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 30 | × | 100 | × | 2 25 | ÷ | 500 | × | ( | 500 | + | 4000 | ÷ | 16 | ) | = | ( | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | ) | ( | 1 | − | 1 4 | ) | − | 30 | × | 100 | × | 2 25 | ) |
( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | − | 4000 | × | 3 50 | ) | ( | 1 | − | 1 4 | ) | ÷ | 500 | × | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 30 | × | 100 | × | 2 25 | ÷ | 500 | × | ( | 500 | + | 4000 | ÷ | 16 | ) | = | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | ) | ( | 1 | − | 1 4 | ) | − | 30 | × | 100 | × | 2 25 |
( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | − | 4000 | × | 3 50 | ) | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 12 25 | ( | 500 | + | 4000 | ÷ | 16 | ) | = | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | ) | ( | 1 | − | 1 4 | ) | − | 240 |
X | ( | 1 | − | 3 5 | ) | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 7500 | × | 1 20 | ( | 1 | − | 1 4 | ) | = | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | ) | ( | 1 | − | 1 4 | ) | − | 240 |
X | ( | 1 | − | 3 5 | ) | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 7500 | × | 1 20 | ( | 1 | − | 1 4 | ) | = | X | ( | 1 | − | 3 5 | ) | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 7500 | × | 1 20 | ( | 1 | − | 1 4 | ) | − | 240 |
X | ( | 1 | − | 3 5 | ) | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 12 25 | = | X | ( | 1 | − | 3 5 | ) | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
X | × | 1 | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | = | X | ( | 1 | − | 3 5 | ) | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
X | × | 1 | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | = | X | × | 1 | ( | 1 | − | 1 4 | ) | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
X | × | 1 500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 3 4 | = | X | × | 1 | ( | 1 | − | 1 4 | ) | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
X | × | 1 500 | × | 1 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 1 500 | × | 1 4 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | = | X | × | 1 | ( | 1 | − | 1 4 | ) | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
X | × | 1 500 | × | 1 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 1 500 | × | 1 4 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | = | X | × | 1 | × | 1 | − | X | × | 1 | × | 1 4 | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 |
X | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 1 2000 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | = | X | × | 1 | − | X | × | 1 4 | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
X | × | 1 500 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 1 2000 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | = | 3 4 | X | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
X | × | 1 500 | × | 500 | + | X | × | 1 500 | × | 4000 | ÷ | 16 | − | X | × | 1 2000 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | = | 3 4 | X | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
X | × | 1 500 | × | 500 | + | X | × | 1 500 | × | 4000 | ÷ | 16 | − | X | × | 1 2000 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | = | 3 4 | X | − | X | × | 3 5 | × | 1 | + | X | × | 3 5 | × | 1 4 | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) |
X | × | 1 | + | X | × | 1 2 | − | X | × | 1 2000 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | = | 3 4 | X | − | X | × | 3 5 | + | X | × | 3 20 | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
3 2 | X | − | X | × | 1 2000 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | = | 3 10 | X | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
3 2 | X | − | X | × | 1 2000 | × | 500 | − | X | × | 1 2000 | × | 4000 | ÷ | 16 | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | = | 3 10 | X | − | 2500 | ( | 1 | − | 1 4 | ) | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
3 2 | X | − | X | × | 1 2000 | × | 500 | − | X | × | 1 2000 | × | 4000 | ÷ | 16 | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | = | 3 10 | X | − | 2500 | × | 1 | + | 2500 | × | 1 4 | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
3 2 | X | − | X | × | 1 4 | − | X | × | 1 8 | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | = | 3 10 | X | − | 2500 | + | 625 | − | 375 | ( | 1 | − | 1 4 | ) | − | 240 |
9 8 | X | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | = | 3 10 | X | − | 2115 | − | 375 | ( | 1 | − | 1 4 | ) |
9 8 | X | − | X | × | 3 2500 | × | 1 | ( | 500 | + | 4000 | ÷ | 16 | ) | + | X | × | 3 2500 | × | 1 4 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | = | 3 10 | X | − | 2115 | − | 375 | ( | 1 | − | 1 4 | ) |
9 8 | X | − | X | × | 3 2500 | × | 1 | ( | 500 | + | 4000 | ÷ | 16 | ) | + | X | × | 3 2500 | × | 1 4 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | = | 3 10 | X | − | 2115 | − | 375 | × | 1 | + | 375 | × | 1 4 |
9 8 | X | − | X | × | 3 2500 | ( | 500 | + | 4000 | ÷ | 16 | ) | + | X | × | 3 10000 | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 5 | ( | 1 | − | 1 4 | ) | ( | 500 | + | 4000 | ÷ | 16 | ) | − | 3 4 | = | 3 10 | X | − | 2115 | − | 375 | + | 375 4 |