19 20 | = | ( | 123 50 | x | ) | ÷ | ( | 1 | + | 73 50 | x | ) |
| 方程两边同时乘以: | ( | 1 | + | 73 50 | x | ) |
19 20 | ( | 1 | + | 73 50 | x | ) | = | ( | 123 50 | x | ) |
19 20 | × | 1 | + | 19 20 | × | 73 50 | x | = | ( | 123 50 | x | ) |
19 20 | × | 1 | + | 19 20 | × | 73 50 | x | = | 123 50 | x |
19 20 | + | 1387 1000 | x | = | 123 50 | x |
1387 1000 | x | − | 123 50 | x | = | - | 19 20 |
| - | 1073 1000 | x | = | - | 19 20 |
19 20 | = | 1073 1000 | x |
1073 1000 | x | = | 19 20 |
| x | = | 19 20 | ÷ | 1073 1000 |
| = | 19 20 | × | 1000 1073 |
| = | 19 | × | 50 1073 |
| x | = | 950 1073 |
| x | = | 0.885368 |