| ( | x | + | 60 | ) | ( | 10000 | ÷ | 70 | ) | + | x | ( | 150 | − | 10000 | ÷ | 70 | ) | = | 35200 |
| 方程左边 = | x | ( | 10000 | ÷ | 70 | ) | + | 60 | ( | 10000 | ÷ | 70 | ) | + | x | ( | 150 | − | 10000 | ÷ | 70 | ) |
| = | x | × | 10000 | ÷ | 70 | + | 60 | ( | 10000 | ÷ | 70 | ) | + | x | ( | 150 | − | 10000 | ÷ | 70 | ) |
| = | x | × | 1000 7 | + | 60 | ( | 10000 | ÷ | 70 | ) | + | x | ( | 150 | − | 10000 | ÷ | 70 | ) |
| = | 1000 7 | x | + | 60 | × | 10000 | ÷ | 70 | + | x | ( | 150 | − | 10000 | ÷ | 70 | ) |
| = | 1000 7 | x | + | 60000 7 | + | x | ( | 150 | − | 10000 | ÷ | 70 | ) |
| = | 1000 7 | x | + | 60000 7 | + | x | × | 150 | − | x | × | 10000 | ÷ | 70 |
| = | 1000 7 | x | + | 60000 7 | + | x | × | 150 | − | x | × | 1000 7 |
| = | 150 | x | + | 60000 7 |
| 150 | x | + | 60000 7 | = | 35200 |
| 150 | x | = | 35200 | − | 60000 7 |
| 150 | x | = | 186400 7 |
| x | = | 186400 7 | ÷ | 150 |
| = | 186400 7 | × | 1 150 |
| = | 3728 7 | × | 1 3 |
| x | = | 3728 21 |
| x | = | 177.52381 |