| ( | 15 | − | x | ) | ÷ | 4700 | = | x | ÷ | 4700 | + | ( | x | − | 7 10 | ) | ÷ | 4700 |
| 方程左边 = | 15 | × | 1 4700 | − | x | × | 1 4700 |
| = | 3 940 | − | x | × | 1 4700 |
3 940 | − | 1 4700 | x | = | x | ÷ | 4700 | + | ( | x | − | 7 10 | ) | ÷ | 4700 |
| 方程右边 = | 1 4700 | x | + | x | × | 1 4700 | − | 7 10 | × | 1 4700 |
| = | 1 4700 | x | + | x | × | 1 4700 | − | 7 47000 |
| = | 1 2350 | x | − | 7 47000 |
3 940 | − | 1 4700 | x | = | 1 2350 | x | − | 7 47000 |
| - | 1 4700 | x | − | 1 2350 | x | = | - | 7 47000 | − | 3 940 |
| - | 3 4700 | x | = | - | 7 47000 | − | 3 940 |
| - | 3 4700 | x | = | - | 157 47000 |
157 47000 | = | 3 4700 | x |
3 4700 | x | = | 157 47000 |
| x | = | 157 47000 | ÷ | 3 4700 |
| = | 157 47000 | × | 4700 3 |
| = | 157 10 | × | 1 3 |
| x | = | 157 30 |
| x | = | 5.233333 |