247 100 | x | ÷ | ( | 1 | + | 147 100 | x | ) | = | - | 3 | x | + | 12 5 |
| 方程两边同时乘以: | ( | 1 | + | 147 100 | x | ) |
247 100 | x | = | - | 3 | x | ( | 1 | + | 147 100 | x | ) | + | 12 5 | ( | 1 | + | 147 100 | x | ) |
247 100 | x | = | - | 3 | x | × | 1 | − | 3 | x | × | 147 100 | x | + | 12 5 | ( | 1 | + | 147 100 | x | ) |
247 100 | x | = | - | 3 | x | − | 441 100 | x | x | + | 12 5 | ( | 1 | + | 147 100 | x | ) |
247 100 | x | = | - | 3 | x | − | 441 100 | x | x | + | 12 5 | × | 1 | + | 12 5 | × | 147 100 | x |
247 100 | x | = | - | 3 | x | − | 441 100 | x | x | + | 12 5 | + | 441 125 | x |
247 100 | x | = | 66 125 | x | − | 441 100 | x | x | + | 12 5 |