1 10 | x | + | 6 | + | ( | 1 10 | x | + | 6 | ) | × | 3 | + | 136 | + | 1520 | = | x |
| 方程左边 = | 1 10 | x | + | 1662 | + | ( | 1 10 | x | + | 6 | ) | × | 3 |
1 10 | x | + | 1662 | + | ( | 1 10 | x | + | 6 | ) | × | 3 | = | x |
| 方程左边 = | 1 10 | x | + | 1662 | + | 1 10 | x | × | 3 | + | 6 | × | 3 |
| = | 1 10 | x | + | 1662 | + | 3 10 | x | + | 18 |
| = | 2 5 | x | + | 1680 |
2 5 | x | + | 1680 | = | x |
2 5 | x | − | x | = | - | 1680 |
| - | 3 5 | x | = | - | 1680 |
| 1680 | = | 3 5 | x |
3 5 | x | = | 1680 |
| x | = | 1680 | ÷ | 3 5 |
| = | 1680 | × | 5 3 |
| = | 560 | × | 5 |
| x | = | 2800 |