| ( | x | ÷ | 1491 20 | ) | + | ( | ( | 7 25 | − | x | ) | ÷ | 119 | ) | = | 651 25 | × | 1 10 | × | 1 1000 |
| 方程左边 = | x | ÷ | 1491 20 | + | ( | ( | 7 25 | − | x | ) | ÷ | 119 | ) |
| = | 20 1491 | x | + | ( | 7 25 | − | x | ) | ÷ | 119 |
| = | 20 1491 | x | + | 7 25 | × | 1 119 | − | x | × | 1 119 |
| = | 20 1491 | x | + | 1 425 | − | x | × | 1 119 |
| = | 127 25347 | x | + | 1 425 |
127 25347 | x | + | 1 425 | = | 651 25 | × | 1 10 | × | 1 1000 |
| 方程右边 = | 651 250000 |
127 25347 | x | + | 1 425 | = | 651 250000 |
127 25347 | x | = | 651 250000 | − | 1 425 |
127 25347 | x | = | 1067 4250000 |
| x | = | 1067 4250000 | ÷ | 127 25347 |
| = | 1067 4250000 | × | 25347 127 |
| = | 1067 250000 | × | 1491 127 |
| x | = | 1590897 31750000 |
| x | = | 0.050107 |