( | X | − | 40 | − | 200 | X | × | 10 100 | ) | X | ( | 1 | − | 20 100 | ) | − | ( | 600 | + | 200 | ) | = | ( | X | − | 40 | − | 300 | X | × | 15 100 | ) | X | ( | 1 | − | 20 100 | ) | ÷ | ( | 600 | + | 100 | ) |
方程两边同时乘以: | ( | 600 | + | 100 | ) |
( | X | − | 40 | − | 200 | X | × | 10 100 | ) | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | − | ( | 600 | + | 200 | ) | ( | 600 | + | 100 | ) | = | ( | X | − | 40 | − | 300 | X | × | 15 100 | ) | X | ( | 1 | − | 20 100 | ) |
X | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | − | 40 | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | − | 200 | X | × | 10 100 | X | = | ( | X | − | 40 | − | 300 | X | × | 15 100 | ) | X | ( | 1 | − | 20 100 | ) |
X | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | − | 40 | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | − | 200 | X | × | 10 100 | X | = | X | X | ( | 1 | − | 20 100 | ) | − | 40 | X | ( | 1 | − | 20 100 | ) | − | 300 | X | × | 15 100 | X | ( | 1 | − | 20 100 | ) |
X | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | − | 40 | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | − | 20 | X | X | ( | 1 | − | 20 100 | ) | = | X | X | ( | 1 | − | 20 100 | ) | − | 40 | X | ( | 1 | − | 20 100 | ) | − | 45 | X | X | ( | 1 | − | 20 100 | ) |
X | X | × | 1 | ( | 600 | + | 100 | ) | − | X | X | × | 20 100 | ( | 600 | + | 100 | ) | − | 40 | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | = | X | X | ( | 1 | − | 20 100 | ) | − | 40 | X | ( | 1 | − | 20 100 | ) | − | 45 | X | X | ( | 1 | − | 20 100 | ) |
X | X | × | 1 | ( | 600 | + | 100 | ) | − | X | X | × | 20 100 | ( | 600 | + | 100 | ) | − | 40 | X | ( | 1 | − | 20 100 | ) | ( | 600 | + | 100 | ) | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 40 | X | ( | 1 | − | 20 100 | ) | − | 45 | X | X |
X | X | × | 1 | × | 600 | + | X | X | × | 1 | × | 100 | − | X | X | × | 20 100 | ( | 600 | + | 100 | ) | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 40 | X | ( | 1 | − | 20 100 | ) | − | 45 | X | X |
X | X | × | 1 | × | 600 | + | X | X | × | 1 | × | 100 | − | X | X | × | 20 100 | ( | 600 | + | 100 | ) | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 40 | X | × | 1 | + | 40 | X | × | 20 100 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 20 100 | ( | 600 | + | 100 | ) | − | 40 | X | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 40 | X | + | 8 | X | − | 45 | X |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 20 100 | ( | 600 | + | 100 | ) | − | 40 | X | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | ( | 1 | − | 20 100 | ) |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 20 100 | × | 600 | − | X | X | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | ( | 1 | − | 20 100 | ) |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 20 100 | × | 600 | − | X | X | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | × | 1 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |
X | X | × | 600 | + | X | X | × | 100 | − | X | X | × | 120 | − | X | X | × | 20 | = | X | X | × | 1 | − | X | X | × | 20 100 | − | 32 | X | − | 45 | X | X | + | 9 |