| ( | x | ÷ | 119 | ) | + | ( | ( | 7 25 | − | x | ) | ÷ | 1491 20 | ) | = | 651 500000 |
| 方程左边 = | x | ÷ | 119 | + | ( | ( | 7 25 | − | x | ) | ÷ | 1491 20 | ) |
| = | 1 119 | x | + | ( | 7 25 | − | x | ) | ÷ | 1491 20 |
| = | 1 119 | x | + | 7 25 | × | 20 1491 | − | x | × | 20 1491 |
| = | 1 119 | x | + | 4 1065 | − | x | × | 20 1491 |
| = | - | 127 25347 | x | + | 4 1065 |
| - | 127 25347 | x | + | 4 1065 | = | 651 500000 |
| - | 127 25347 | x | = | 651 500000 | − | 4 1065 |
| - | 127 25347 | x | = | - | 261337 106500000 |
261337 106500000 | = | 127 25347 | x |
127 25347 | x | = | 261337 106500000 |
| x | = | 261337 106500000 | ÷ | 127 25347 |
| = | 261337 106500000 | × | 25347 127 |
| = | 261337 500000 | × | 119 127 |
| x | = | 31099103 63500000 |
| x | = | 0.48975 |