| ( | x | − | 7 8 | ) | ÷ | ( | - | 1 2 | − | x | ) | = | 19 10 | ÷ | 7 5 |
| 方程两边同时乘以: | ( | - | 1 2 | − | x | ) |
| ( | x | − | 7 8 | ) | = | 19 10 | ÷ | 7 5 | × | ( | - | 1 2 | − | x | ) |
| x | − | 7 8 | = | 19 10 | ÷ | 7 5 | × | ( | - | 1 2 | − | x | ) |
| x | − | 7 8 | = | - | 19 10 | ÷ | 7 5 | × | 1 2 | − | 19 10 | ÷ | 7 5 | × | x |
| x | − | 7 8 | = | - | 19 28 | − | 19 14 | x |
| x | + | 19 14 | x | = | - | 19 28 | + | 7 8 |
33 14 | x | = | - | 19 28 | + | 7 8 |
33 14 | x | = | 11 56 |
| x | = | 11 56 | ÷ | 33 14 |
| = | 11 56 | × | 14 33 |
| = | 1 4 | × | 1 3 |
| x | = | 1 12 |
| x | = | 0.083333 |