| ( | 22 | + | x | ) | × | 9 10 | ÷ | 31 | + | x | = | 1 |
| 方程左边 = | ( | 22 | + | x | ) | × | 9 310 | + | x |
| ( | 22 | + | x | ) | × | 9 310 | + | x | = | 1 |
| 方程左边 = | 22 | × | 9 310 | + | x | × | 9 310 | + | x |
| = | 99 155 | + | x | × | 9 310 | + | x |
| = | 99 155 | + | 319 310 | x |
99 155 | + | 319 310 | x | = | 1 |
319 310 | x | = | 1 | − | 99 155 |
319 310 | x | = | 56 155 |
| x | = | 56 155 | ÷ | 319 310 |
| = | 56 155 | × | 310 319 |
| = | 56 | × | 2 319 |
| x | = | 112 319 |
| x | = | 0.351097 |