19 50 | x | × | 7 | − | 50 | ÷ | 19 | + | 4 | x | × | 50 | ÷ | 19 | = | 0 |
| 方程左边 = | 133 50 | x | − | 50 19 | + | 200 19 | x |
| = | 12527 950 | x | − | 50 19 |
12527 950 | x | − | 50 19 | = | 0 |
12527 950 | x | = | 0 | + | 50 19 |
12527 950 | x | = | 50 19 |
| x | = | 50 19 | ÷ | 12527 950 |
| = | 50 19 | × | 950 12527 |
| = | 50 | × | 50 12527 |
| x | = | 2500 12527 |
| x | = | 0.199569 |