| ( | 31600 | − | 14400 | ) | + | 700 | x | = | 1000 | x |
| Left side of the equation = | 31600 | − | 14400 | + | 700 | x |
| = | 17200 | + | 700 | x |
| 17200 | + | 700 | x | = | 1000 | x |
| 700 | x | − | 1000 | x | = | - | 17200 |
| - | 300 | x | = | - | 17200 |
| 17200 | = | 300 | x |
| 300 | x | = | 17200 |
| x | = | 17200 | ÷ | 300 |
| = | 17200 | × | 1 300 |
| = | 172 | × | 1 3 |
| x | = | 172 3 |
| x | = | 57.333333 |