| x | ÷ | 2841 1000 | ÷ | 10000 | + | 630 | x | ÷ | ( | 10000000 | − | 113 | x | ) | = | 215 |
| 方程两边同时乘以: | ( | 10000000 | − | 113 | x | ) |
| x | ÷ | 2841 1000 | ÷ | 10000 | × | ( | 10000000 | − | 113 | x | ) | + | 630 | x | = | 215 | ( | 10000000 | − | 113 | x | ) |
| x | ÷ | 2841 1000 | ÷ | 10000 | × | 10000000 | − | x | ÷ | 2841 1000 | ÷ | 10000 | × | 113 | x | + | 630 | x | = | 215 | ( | 10000000 | − | 113 | x | ) |
| x | ÷ | 2841 1000 | ÷ | 10000 | × | 10000000 | − | x | ÷ | 2841 1000 | ÷ | 10000 | × | 113 | x | + | 630 | x | = | 215 | × | 10000000 | − | 215 | × | 113 | x |
| x | × | 1000000 2841 | − | x | × | 113 28410 | x | + | 630 | x | = | 2150000000 | − | 24295 | x |
2789830 2841 | x | − | x | × | 113 28410 | x | = | 2150000000 | − | 24295 | x |