| ( | 152 | + | 171 | + | 248 | ) | x | ( | 1 | − | 41 100 | ) | + | 120 | x | ( | 1 | − | 39 100 | ) | = | 0 |
| 方程左边 = | 152 | x | ( | 1 | − | 41 100 | ) | + | 171 | x | ( | 1 | − | 41 100 | ) | + | 248 | x | ( | 1 | − | 41 100 | ) | + | 120 | x | ( | 1 | − | 39 100 | ) |
| = | 152 | x | × | 1 | − | 152 | x | × | 41 100 | + | 171 | x | ( | 1 | − | 41 100 | ) | + | 248 | x | ( | 1 | − | 41 100 | ) |
| = | 152 | x | − | 1558 25 | x | + | 171 | x | ( | 1 | − | 41 100 | ) | + | 248 | x | ( | 1 | − | 41 100 | ) | + | 120 | x |
| = | 2242 25 | x | + | 171 | x | ( | 1 | − | 41 100 | ) | + | 248 | x | ( | 1 | − | 41 100 | ) | + | 120 | x | ( | 1 | − | 39 100 | ) |
| = | 2242 25 | x | + | 171 | x | × | 1 | − | 171 | x | × | 41 100 | + | 248 | x | ( | 1 | − | 41 100 | ) | + | 120 |
| = | 2242 25 | x | + | 171 | x | − | 7011 100 | x | + | 248 | x | ( | 1 | − | 41 100 | ) | + | 120 | x | ( | 1 | − | 39 100 | ) |
| = | 19057 100 | x | + | 248 | x | ( | 1 | − | 41 100 | ) | + | 120 | x | ( | 1 | − | 39 100 | ) |
| = | 19057 100 | x | + | 248 | x | × | 1 | − | 248 | x | × | 41 100 | + | 120 | x | ( | 1 | − | 39 100 | ) |
| = | 19057 100 | x | + | 248 | x | − | 2542 25 | x | + | 120 | x | ( | 1 | − | 39 100 | ) |
| = | 33689 100 | x | + | 120 | x | ( | 1 | − | 39 100 | ) |
| = | 33689 100 | x | + | 120 | x | × | 1 | − | 120 | x | × | 39 100 |
| = | 33689 100 | x | + | 120 | x | − | 234 5 | x |
| = | 41009 100 | x |
41009 100 | x | = | 0 |
| x | = | 0 | ÷ | 41009 100 |
| = | 0 | × | 100 41009 |
| x | = | 0 |