| x | ÷ | 144 | − | 8 | ÷ | 277 | − | 15 | ÷ | 900 | − | 7 200 | = | 14 5 | ( | 68 | + | x | ) | ÷ | 4200 |
| 方程左边 = | x | × | 1 144 | − | 8 277 | − | 1 60 | − | 7 200 |
| = | 1 144 | x | − | 13387 166200 |
1 144 | x | − | 13387 166200 | = | 14 5 | ( | 68 | + | x | ) | ÷ | 4200 |
| 方程右边 = | 1 1500 | ( | 68 | + | x | ) |
1 144 | x | − | 13387 166200 | = | 1 1500 | ( | 68 | + | x | ) |
| 方程右边 = | 1 1500 | × | 68 | + | 1 1500 | x |
| = | 17 375 | + | 1 1500 | x |
1 144 | x | − | 13387 166200 | = | 17 375 | + | 1 1500 | x |
1 144 | x | − | 1 1500 | x | = | 17 375 | + | 13387 166200 |
113 18000 | x | = | 17 375 | + | 13387 166200 |
113 18000 | x | = | 34869 277000 |
| x | = | 34869 277000 | ÷ | 113 18000 |
| = | 34869 277000 | × | 18000 113 |
| = | 34869 277 | × | 18 113 |
| x | = | 627642 31301 |
| x | = | 20.051819 |