| X | = | ( | 7781 | + | X | ) | × | 3 4 | ÷ | 2 | × | 63 1250 |
| 方程右边 = | ( | 7781 | + | X | ) | × | 189 10000 |
| X | = | ( | 7781 | + | X | ) | × | 189 10000 |
| 方程右边 = | 7781 | × | 189 10000 | + | X | × | 189 10000 |
| = | 1470609 10000 | + | X | × | 189 10000 |
| X | = | 1470609 10000 | + | 189 10000 | X |
| X | − | 189 10000 | X | = | 1470609 10000 |
9811 10000 | X | = | 1470609 10000 |
| X | = | 1470609 10000 | ÷ | 9811 10000 |
| = | 1470609 10000 | × | 10000 9811 |
| = | 1470609 | × | 1 9811 |
| X | = | 1470609 9811 |
| X | = | 149.893895 |