| x | ÷ | ( | x | + | 12 | ) | = | 8333 10000 |
| 方程两边同时乘以: | ( | x | + | 12 | ) |
| x | = | 8333 10000 | ( | x | + | 12 | ) |
| x | = | 8333 10000 | x | + | 8333 10000 | × | 12 |
| x | = | 8333 10000 | x | + | 24999 2500 |
| x | − | 8333 10000 | x | = | 24999 2500 |
1667 10000 | x | = | 24999 2500 |
| x | = | 24999 2500 | ÷ | 1667 10000 |
| = | 24999 2500 | × | 10000 1667 |
| = | 24999 | × | 4 1667 |
| x | = | 99996 1667 |
| x | = | 59.985603 |