| ( | 279 10 | + | 203 50 | x | ) | ÷ | 57 10 | = | ( | 213 10 | + | 203 50 | x | ) | ÷ | 22 5 |
| 方程左边 = | 279 10 | × | 10 57 | + | 203 50 | x | × | 10 57 |
| = | 93 19 | + | 203 285 | x |
93 19 | + | 203 285 | x | = | ( | 213 10 | + | 203 50 | x | ) | ÷ | 22 5 |
| 方程右边 = | 213 10 | × | 5 22 | + | 203 50 | x | × | 5 22 |
| = | 213 44 | + | 203 220 | x |
93 19 | + | 203 285 | x | = | 213 44 | + | 203 220 | x |
203 285 | x | − | 203 220 | x | = | 213 44 | − | 93 19 |
| - | 2639 12540 | x | = | 213 44 | − | 93 19 |
| - | 2639 12540 | x | = | - | 45 836 |
45 836 | = | 2639 12540 | x |
2639 12540 | x | = | 45 836 |
| x | = | 45 836 | ÷ | 2639 12540 |
| = | 45 836 | × | 12540 2639 |
| = | 45 | × | 15 2639 |
| x | = | 675 2639 |
| x | = | 0.255779 |