( | ( | 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 |
方程左边 = | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | − | 4000 | × | 3 50 | ) | ( | 1 | − | 1 4 | ) | × | 1 500 | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | X | ( | 1 | − | 3 5 | ) | ( | 1 | − | 1 4 | ) | × | 1 500 | − | 2500 | ( | 1 | − | 1 4 | ) | × | 1 500 | − | 7500 | × | 1 20 | ( | 1 | − | 1 4 | ) | × | 1 500 | − | 4000 |
= | X | ( | 1 | − | 3 5 | ) | ( | 1 | − | 1 4 | ) | × | 1 500 | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | X | × | 1 | ( | 1 | − | 1 4 | ) | × | 1 500 | − | X | × | 3 5 | ( | 1 | − | 1 4 | ) | × | 1 500 | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) |
= | X | × | 1 500 | ( | 1 | − | 1 4 | ) | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 | ( | 1 | − | 1 4 | ) |
= | X | × | 1 500 | × | 1 | − | X | × | 1 500 | × | 1 4 | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 |
= | X | × | 1 500 | − | X | × | 1 2000 | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 |
= | 3 2000 | X | − | X | × | 3 2500 | ( | 1 | − | 1 4 | ) | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) |
= | 3 2000 | X | − | X | × | 3 2500 | × | 1 | + | X | × | 3 2500 | × | 1 4 | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) |
= | 3 2000 | X | − | X | × | 3 2500 | + | X | × | 3 10000 | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 | ( | 1 | − | 1 4 | ) |
= | 3 5000 | X | − | 5 | ( | 1 | − | 1 4 | ) | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 5 | × | 1 | + | 5 | × | 1 4 | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 5 | + | 5 4 | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 15 4 | − | 3 4 | ( | 1 | − | 1 4 | ) | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 15 4 | − | 3 4 | × | 1 | + | 3 4 | × | 1 4 | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 15 4 | − | 3 4 | + | 3 16 | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 69 16 | − | 12 25 | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 69 16 | − | 12 25 | × | 1 | + | 12 25 | × | 1 4 | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 69 16 | − | 12 25 | + | 3 25 | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 1869 400 | − | ( | 30 | × | 100 | × | 2 25 | ) | × | 1 500 |
= | 3 5000 | X | − | 1869 400 | − | 30 | × | 100 | × | 2 25 | × | 1 500 |
= | 3 5000 | X | − | 1869 400 | − | 12 25 |
= | 3 5000 | X | − | 2061 400 |
3 5000 | X | − | 2061 400 | = | ( | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | ) | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | ) | ÷ | 500 | + | 4000 | ÷ | 16 |
方程右边 = | ( | ( | X | ( | 1 | − | 3 5 | ) | − | 2500 | − | 7500 | × | 1 20 | ) | ( | 1 | − | 1 4 | ) | − | ( | 30 | × | 100 | × | 2 25 | ) | ) | × | 1 500 | + | 250 |