| x | ÷ | 7811 100 | = | 49 50 | x | ÷ | 7811 100 | + | 49 50 | ( | 1 | − | x | ) | ÷ | 9213 100 |
| 方程右边 = | 98 7811 | x | + | 98 9213 | ( | 1 | − | x | ) |
100 7811 | x | = | 98 7811 | x | + | 98 9213 | ( | 1 | − | x | ) |
| 方程右边 = | 98 7811 | x | + | 98 9213 | × | 1 | − | 98 9213 | x |
| = | 98 7811 | x | + | 98 9213 | − | 98 9213 | x |
| = | 137396 71962743 | x | + | 98 9213 |
100 7811 | x | = | 137396 71962743 | x | + | 98 9213 |
100 7811 | x | − | 137396 71962743 | x | = | 98 9213 |