| ( | x | − | 7 | ) | ÷ | ( | 8 | − | 7 | ) | = | ( | 5 | − | 12171 2500 | ) | ÷ | ( | 53349 10000 | − | 12171 2500 | ) |
| 方程两边同时乘以: | ( | 8 | − | 7 | ) | , | ( | 53349 10000 | − | 12171 2500 | ) |
| ( | x | − | 7 | ) | ( | 53349 10000 | − | 12171 2500 | ) | = | ( | 5 | − | 12171 2500 | ) | ( | 8 | − | 7 | ) |
| x | ( | 53349 10000 | − | 12171 2500 | ) | − | 7 | ( | 53349 10000 | − | 12171 2500 | ) | = | ( | 5 | − | 12171 2500 | ) | ( | 8 | − | 7 | ) |
| x | ( | 53349 10000 | − | 12171 2500 | ) | − | 7 | ( | 53349 10000 | − | 12171 2500 | ) | = | 5 | ( | 8 | − | 7 | ) | − | 12171 2500 | ( | 8 | − | 7 | ) |
| x | × | 53349 10000 | − | x | × | 12171 2500 | − | 7 | ( | 53349 10000 | − | 12171 2500 | ) | = | 5 | ( | 8 | − | 7 | ) | − | 12171 2500 | ( | 8 | − | 7 | ) |
| x | × | 53349 10000 | − | x | × | 12171 2500 | − | 7 | ( | 53349 10000 | − | 12171 2500 | ) | = | 5 | × | 8 | − | 5 | × | 7 | − | 12171 2500 | ( | 8 | − | 7 | ) |
| x | × | 53349 10000 | − | x | × | 12171 2500 | − | 7 | ( | 53349 10000 | − | 12171 2500 | ) | = | 40 | − | 35 | − | 12171 2500 | ( | 8 | − | 7 | ) |
933 2000 | x | − | 7 | ( | 53349 10000 | − | 12171 2500 | ) | = | 5 | − | 12171 2500 | ( | 8 | − | 7 | ) |
933 2000 | x | − | 7 | × | 53349 10000 | + | 7 | × | 12171 2500 | = | 5 | − | 12171 2500 | ( | 8 | − | 7 | ) |
933 2000 | x | − | 7 | × | 53349 10000 | + | 7 | × | 12171 2500 | = | 5 | − | 12171 2500 | × | 8 | + | 12171 2500 | × | 7 |
933 2000 | x | − | 373443 10000 | + | 85197 2500 | = | 5 | − | 24342 625 | + | 85197 2500 |
933 2000 | x | − | 6531 2000 | = | 329 2500 |
933 2000 | x | = | 329 2500 | + | 6531 2000 |
933 2000 | x | = | 33971 10000 |
| x | = | 33971 10000 | ÷ | 933 2000 |
| = | 33971 10000 | × | 2000 933 |
| = | 33971 5 | × | 1 933 |
| x | = | 33971 4665 |
| x | = | 7.282101 |