| ( | x | ÷ | 18 | + | ( | 1 | − | x | ) | ÷ | 65 | ) | = | 393401 20000000 |
| 方程左边 = | x | ÷ | 18 | + | ( | 1 | − | x | ) | ÷ | 65 |
| = | 1 18 | x | + | 1 | × | 1 65 | − | x | × | 1 65 |
| = | 1 18 | x | + | 1 65 | − | x | × | 1 65 |
| = | 47 1170 | x | + | 1 65 |
47 1170 | x | + | 1 65 | = | 393401 20000000 |
47 1170 | x | = | 393401 20000000 | − | 1 65 |
47 1170 | x | = | 1114213 260000000 |
| x | = | 1114213 260000000 | ÷ | 47 1170 |
| = | 1114213 260000000 | × | 1170 47 |
| = | 1114213 26000000 | × | 117 47 |
| x | = | 130362921 1222000000 |
| x | = | 10027917 94000000 |
| x | = | 0.10668 |