| ( | 1 | + | 2 5 | + | 400 | ÷ | 1650 | + | X | ÷ | 108 | ) | × | 1000 | = | 3 | ( | 1510 | + | X | ) |
| 方程左边 = | 1 | × | 1000 | + | 2 5 | × | 1000 | + | 400 | ÷ | 1650 | × | 1000 | + | X | ÷ | 108 | × | 1000 |
| = | 1000 | + | 400 | + | 8000 33 | + | X | × | 250 27 |
| = | 54200 33 | + | 250 27 | X |
54200 33 | + | 250 27 | X | = | 3 | ( | 1510 | + | X | ) |
| 方程右边 = | 3 | × | 1510 | + | 3 | X |
| = | 4530 | + | 3 | X |
54200 33 | + | 250 27 | X | = | 4530 | + | 3 | X |
250 27 | X | − | 3 | X | = | 4530 | − | 54200 33 |
169 27 | X | = | 4530 | − | 54200 33 |
169 27 | X | = | 95290 33 |
| X | = | 95290 33 | ÷ | 169 27 |
| = | 95290 33 | × | 27 169 |
| = | 7330 11 | × | 9 13 |
| X | = | 65970 143 |
| X | = | 461.328671 |