| 10 | x | = | 13 10 | ( | 57 100 | − | 51 200 | × | 43 50 | ) | ( | 100 | − | 10 | x | ) | − | 111 100 | × | 7 10 |
| 方程右边 = | 13 10 | ( | 57 100 | − | 51 200 | × | 43 50 | ) | ( | 100 | − | 10 | x | ) | − | 777 1000 |
| 10 | x | = | 13 10 | ( | 57 100 | − | 51 200 | × | 43 50 | ) | ( | 100 | − | 10 | x | ) | − | 777 1000 |
| 方程右边 = | 13 10 | × | 57 100 | ( | 100 | − | 10 | x | ) | − | 13 10 | × | 51 200 | × | 43 50 | ( | 100 | − | 10 | x | ) | − | 777 1000 |
| = | 741 1000 | ( | 100 | − | 10 | x | ) | − | 28509 100000 | ( | 100 | − | 10 | x | ) | − | 777 1000 |
| = | 741 1000 | × | 100 | − | 741 1000 | × | 10 | x | − | 28509 100000 | ( | 100 | − | 10 | x | ) | − | 777 1000 |
| = | 741 10 | − | 741 100 | x | − | 28509 100000 | ( | 100 | − | 10 | x | ) | − | 777 1000 |
| = | 73323 1000 | − | 741 100 | x | − | 28509 100000 | ( | 100 | − | 10 | x | ) |
| = | 73323 1000 | − | 741 100 | x | − | 28509 100000 | × | 100 | + | 28509 100000 | × | 10 | x |
| = | 73323 1000 | − | 741 100 | x | − | 28509 1000 | + | 28509 10000 | x |
| = | 22407 500 | − | 45591 10000 | x |
| 10 | x | = | 22407 500 | − | 45591 10000 | x |
| 10 | x | + | 45591 10000 | x | = | 22407 500 |
145591 10000 | x | = | 22407 500 |
| x | = | 22407 500 | ÷ | 145591 10000 |
| = | 22407 500 | × | 10000 145591 |
| = | 22407 | × | 20 145591 |
| x | = | 448140 145591 |
| x | = | 3.078075 |