| ( | x | + | 350 | ) | × | 90 100 | − | 75 100 | x | + | 350 | ÷ | ( | 1 | + | 25 100 | ) | = | 50 |
| 方程两边同时乘以: | ( | 1 | + | 25 100 | ) |
| ( | x | + | 350 | ) | × | 90 100 | ( | 1 | + | 25 100 | ) | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 50 | ( | 1 | + | 25 100 | ) |
| x | × | 90 100 | ( | 1 | + | 25 100 | ) | + | 350 | × | 90 100 | ( | 1 | + | 25 100 | ) | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 50 | ( | 1 | + | 25 100 | ) |
| x | × | 90 100 | ( | 1 | + | 25 100 | ) | + | 350 | × | 90 100 | ( | 1 | + | 25 100 | ) | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 50 | × | 1 | + | 50 | × | 25 100 |
| x | × | 90 100 | ( | 1 | + | 25 100 | ) | + | 315 | ( | 1 | + | 25 100 | ) | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 50 | + | 25 2 |
| x | × | 90 100 | ( | 1 | + | 25 100 | ) | + | 315 | ( | 1 | + | 25 100 | ) | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 125 2 |
| x | × | 90 100 | × | 1 | + | x | × | 90 100 | × | 25 100 | + | 315 | ( | 1 | + | 25 100 | ) | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 125 2 |
| x | × | 9 10 | + | x | × | 9 40 | + | 315 | ( | 1 | + | 25 100 | ) | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 125 2 |
9 8 | x | + | 315 | ( | 1 | + | 25 100 | ) | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 125 2 |
9 8 | x | + | 315 | × | 1 | + | 315 | × | 25 100 | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 125 2 |
9 8 | x | + | 315 | + | 315 4 | − | 75 100 | x | ( | 1 | + | 25 100 | ) | + | 350 | = | 125 2 |
9 8 | x | + | 2975 4 | − | 75 100 | x | ( | 1 | + | 25 100 | ) | = | 125 2 |
9 8 | x | + | 2975 4 | − | 75 100 | x | × | 1 | − | 75 100 | x | × | 25 100 | = | 125 2 |
9 8 | x | + | 2975 4 | − | 3 4 | x | − | 3 16 | x | = | 125 2 |
3 16 | x | + | 2975 4 | = | 125 2 |
3 16 | x | = | 125 2 | − | 2975 4 |
3 16 | x | = | - | 2725 4 |
| x | = | - | 2725 4 | ÷ | 3 16 |
| = | - | 2725 4 | × | 16 3 |
| = | - | 2725 | × | 4 3 |
| x | = | - | 10900 3 |
| x | = | - 3633.333333 |