153 25 | x | × | 2 | + | 489 20 | x | − | 3627 100 | = | 0 |
| 方程左边 = | 306 25 | x | + | 489 20 | x | − | 3627 100 |
| = | 3669 100 | x | − | 3627 100 |
3669 100 | x | − | 3627 100 | = | 0 |
3669 100 | x | = | 0 | + | 3627 100 |
3669 100 | x | = | 3627 100 |
| x | = | 3627 100 | ÷ | 3669 100 |
| = | 3627 100 | × | 100 3669 |
| = | 1209 | × | 1 1223 |
| x | = | 1209 1223 |
| x | = | 0.988553 |