| ( | 1108 | × | 489 100 | + | 5 | x | − | ( | 7 | × | 5 | + | 4 | ) | ) | ÷ | 1100 | + | x | − | 8 | = | 49 10 |
| 方程左边 = | 1108 | × | 489 100 | × | 1 1100 | + | 5 | x | × | 1 1100 | − | ( | 7 | × | 5 | + | 4 | ) | × | 1 1100 | + | x | − | 8 |
| = | 135453 27500 | + | 1 220 | x | − | ( | 7 | × | 5 | + | 4 | ) | × | 1 1100 | + | x | − | 8 |
| = | - | 84547 27500 | + | 221 220 | x | − | ( | 7 | × | 5 | + | 4 | ) | × | 1 1100 |
| = | - | 84547 27500 | + | 221 220 | x | − | 7 | × | 5 | × | 1 1100 | − | 4 | × | 1 1100 |
| = | - | 84547 27500 | + | 221 220 | x | − | 7 220 | − | 1 275 |
| = | - | 42761 13750 | + | 221 220 | x |
| - | 42761 13750 | + | 221 220 | x | = | 49 10 |
221 220 | x | = | 49 10 | + | 42761 13750 |
221 220 | x | = | 55068 6875 |
| x | = | 55068 6875 | ÷ | 221 220 |
| = | 55068 6875 | × | 220 221 |
| = | 4236 125 | × | 4 17 |
| x | = | 16944 2125 |
| x | = | 7.973647 |