| ( | 42 | x | + | 54343 500 | × | 450 | ) | ÷ | ( | x | + | 450 | ) | = | 92 |
| 方程两边同时乘以: | ( | x | + | 450 | ) |
| ( | 42 | x | + | 54343 500 | × | 450 | ) | = | 92 | ( | x | + | 450 | ) |
| 42 | x | + | 54343 500 | × | 450 | = | 92 | ( | x | + | 450 | ) |
| 42 | x | + | 54343 500 | × | 450 | = | 92 | x | + | 92 | × | 450 |
| 42 | x | + | 489087 10 | = | 92 | x | + | 41400 |
| 42 | x | − | 92 | x | = | 41400 | − | 489087 10 |
| - | 50 | x | = | 41400 | − | 489087 10 |
| - | 50 | x | = | - | 75087 10 |
75087 10 | = | 50 | x |
| 50 | x | = | 75087 10 |
| x | = | 75087 10 | ÷ | 50 |
| = | 75087 10 | × | 1 50 |
| x | = | 75087 500 |
| x | = | 150.174 |