| ( | ( | 3600 | − | x | ) | ÷ | 113 10 | ) | + | ( | x | ÷ | 79 10 | ) | = | 330 |
| 方程左边 = | ( | 3600 | − | x | ) | ÷ | 113 10 | + | ( | x | ÷ | 79 10 | ) |
| = | 3600 | × | 10 113 | − | x | × | 10 113 | + | ( | x | ÷ | 79 10 | ) |
| = | 36000 113 | − | x | × | 10 113 | + | ( | x | ÷ | 79 10 | ) |
| = | 36000 113 | − | 10 113 | x | + | x | ÷ | 79 10 |
| = | 36000 113 | + | 340 8927 | x |
36000 113 | + | 340 8927 | x | = | 330 |
340 8927 | x | = | 330 | − | 36000 113 |
340 8927 | x | = | 1290 113 |
| x | = | 1290 113 | ÷ | 340 8927 |
| = | 1290 113 | × | 8927 340 |
| = | 129 113 | × | 8927 34 |
| x | = | 1151583 3842 |
| x | = | 299.735294 |