| ( | x | − | 6000 | × | 3 50 | ) | × | 3 4 | ÷ | 3600 | = | ( | x | − | 6000 | × | 3 50 | − | 2400 | × | 2 25 | ) | × | 3 4 | ÷ | 300 |
| 方程左边 = | ( | x | − | 6000 | × | 3 50 | ) | × | 1 4800 |
| ( | x | − | 6000 | × | 3 50 | ) | × | 1 4800 | = | ( | x | − | 6000 | × | 3 50 | − | 2400 | × | 2 25 | ) | × | 3 4 | ÷ | 300 |
| 方程左边 = | x | × | 1 4800 | − | 6000 | × | 3 50 | × | 1 4800 |
| = | x | × | 1 4800 | − | 3 40 |
1 4800 | x | − | 3 40 | = | ( | x | − | 6000 | × | 3 50 | − | 2400 | × | 2 25 | ) | × | 3 4 | ÷ | 300 |
| 方程右边 = | ( | x | − | 6000 | × | 3 50 | − | 2400 | × | 2 25 | ) | × | 1 400 |
1 4800 | x | − | 3 40 | = | ( | x | − | 6000 | × | 3 50 | − | 2400 | × | 2 25 | ) | × | 1 400 |
| 方程右边 = | x | × | 1 400 | − | 6000 | × | 3 50 | × | 1 400 | − | 2400 | × | 2 25 | × | 1 400 |
| = | x | × | 1 400 | − | 9 10 | − | 12 25 |
| = | 1 400 | x | − | 69 50 |
1 4800 | x | − | 3 40 | = | 1 400 | x | − | 69 50 |
1 4800 | x | − | 1 400 | x | = | - | 69 50 | + | 3 40 |
| - | 11 4800 | x | = | - | 69 50 | + | 3 40 |
| - | 11 4800 | x | = | - | 261 200 |
261 200 | = | 11 4800 | x |
11 4800 | x | = | 261 200 |
| x | = | 261 200 | ÷ | 11 4800 |
| = | 261 200 | × | 4800 11 |
| = | 261 | × | 24 11 |
| x | = | 6264 11 |
| x | = | 569.454545 |