| X | ÷ | 87 | + | 21 | ÷ | 126 | − | 35 | ÷ | 2000 | − | 40 | ÷ | 1650 | = | 119 50000 | ( | X | + | 96 | ) |
| 方程左边 = | X | × | 1 87 | + | 1 6 | − | 7 400 | − | 4 165 |
| = | 1 87 | X | + | 1649 13200 |
1 87 | X | + | 1649 13200 | = | 119 50000 | ( | X | + | 96 | ) |
| 方程右边 = | 119 50000 | X | + | 119 50000 | × | 96 |
| = | 119 50000 | X | + | 714 3125 |
1 87 | X | + | 1649 13200 | = | 119 50000 | X | + | 714 3125 |
1 87 | X | − | 119 50000 | X | = | 714 3125 | − | 1649 13200 |
39647 4350000 | X | = | 714 3125 | − | 1649 13200 |
39647 4350000 | X | = | 170867 1650000 |
| X | = | 170867 1650000 | ÷ | 39647 4350000 |
| = | 170867 1650000 | × | 4350000 39647 |
| = | 170867 11 | × | 29 39647 |
| X | = | 4955143 436117 |
| X | = | 11.361958 |