| 2251 | ÷ | 77500 | = | 171 500 | + | x | ÷ | 2500 | − | 124200 | × | 37 25 | ÷ | 310000 |
| Left side of the equation = | 2251 77500 |
2251 77500 | = | 171 500 | + | x | ÷ | 2500 | − | 124200 | × | 37 25 | ÷ | 310000 |
| Right side of the equation = | 171 500 | + | x | × | 1 2500 | − | 22977 38750 |
| = | - | 19449 77500 | + | 1 2500 | x |
2251 77500 | = | - | 19449 77500 | + | 1 2500 | x |
| - | 1 2500 | x | = | - | 19449 77500 | − | 2251 77500 |
| - | 1 2500 | x | = | - | 7 25 |
7 25 | = | 1 2500 | x |
1 2500 | x | = | 7 25 |
| x | = | 7 25 | ÷ | 1 2500 |
| = | 7 25 | × | 2500 |
| = | 7 | × | 100 |
| x | = | 700 |