| ( | 85 100 | × | 160 | ) | x | + | 6 | ( | 85 100 | × | 60 | ) | = | 100 | + | ( | 75 100 | × | 160 | ) | x | + | ( | 75 100 | × | 60 | ) | × | 6 |
| 方程左边 = | 85 100 | × | 160 | x | + | 6 | ( | 85 100 | × | 60 | ) |
| = | 136 | x | + | 6 | ( | 85 100 | × | 60 | ) |
| = | 136 | x | + | 6 | × | 85 100 | × | 60 |
| = | 136 | x | + | 306 |
| 136 | x | + | 306 | = | 100 | + | ( | 75 100 | × | 160 | ) | x | + | ( | 75 100 | × | 60 | ) | × | 6 |
| 方程右边 = | 100 | + | 75 100 | × | 160 | x | + | ( | 75 100 | × | 60 | ) | × | 6 |
| = | 100 | + | 120 | x | + | ( | 75 100 | × | 60 | ) | × | 6 |
| = | 100 | + | 120 | x | + | 75 100 | × | 60 | × | 6 |
| = | 100 | + | 120 | x | + | 270 |
| = | 370 | + | 120 | x |
| 136 | x | + | 306 | = | 370 | + | 120 | x |
| 136 | x | − | 120 | x | = | 370 | − | 306 |
| 16 | x | = | 370 | − | 306 |
| 16 | x | = | 64 |
| x | = | 64 | ÷ | 16 |
| = | 64 | × | 1 16 |
| = | 4 | × | 1 |
| x | = | 4 |