| ( | 25900 | + | X | ) | × | 3 25 | + | ( | 25900 | + | X | ) | = | 29974 |
| Left side of the equation = | 25900 | × | 3 25 | + | X | × | 3 25 | + | ( | 25900 | + | X | ) |
| = | 3108 | + | X | × | 3 25 | + | ( | 25900 | + | X | ) |
| = | 3108 | + | 3 25 | X | + | 25900 | + | X |
| = | 29008 | + | 28 25 | X |
| 29008 | + | 28 25 | X | = | 29974 |
28 25 | X | = | 29974 | − | 29008 |
28 25 | X | = | 966 |
| X | = | 966 | ÷ | 28 25 |
| = | 966 | × | 25 28 |
| = | 69 | × | 25 2 |
| X | = | 1725 2 |
| X | = | 862.5 |