| 50 | × | 49 5 | + | x | × | 88 | = | ( | 50 | + | x | ) | × | 25 |
| Left side of the equation = | 490 | + | x | × | 88 |
| 490 | + | 88 | x | = | ( | 50 | + | x | ) | × | 25 |
| Right side of the equation = | 50 | × | 25 | + | x | × | 25 |
| = | 1250 | + | x | × | 25 |
| 490 | + | 88 | x | = | 1250 | + | 25 | x |
| 88 | x | − | 25 | x | = | 1250 | − | 490 |
| 63 | x | = | 1250 | − | 490 |
| 63 | x | = | 760 |
| x | = | 760 | ÷ | 63 |
| = | 760 | × | 1 63 |
| x | = | 760 63 |
| x | = | 12.063492 |