481 12500 | x | ÷ | ( | 17399 500000000 | + | ( | 175499 25000000 | + | 220663 25000000 | − | 13919 200000000 | ) | x | ) | = | 41 50 |
| 方程两边同时乘以: | ( | 17399 500000000 | + | ( | 175499 25000000 | + | 220663 25000000 | − | 13919 200000000 | ) | x | ) |
481 12500 | x | = | 41 50 | ( | 17399 500000000 | + | ( | 175499 25000000 | + | 220663 25000000 | − | 13919 200000000 | ) | x | ) |
481 12500 | x | = | 41 50 | × | 17399 500000000 | + | 41 50 | ( | 175499 25000000 | + | 220663 25000000 | − | 13919 200000000 | ) | x |