| ( | 26807 1000 | + | x | ) | × | 43 20 | = | 26807 500 | + | 72221 1000 | − | x |
| 方程左边 = | 26807 1000 | × | 43 20 | + | x | × | 43 20 |
| = | 1152701 20000 | + | x | × | 43 20 |
1152701 20000 | + | 43 20 | x | = | 26807 500 | + | 72221 1000 | − | x |
| 方程右边 = | 25167 200 | − | x |
1152701 20000 | + | 43 20 | x | = | 25167 200 | − | x |
43 20 | x | + | x | = | 25167 200 | − | 1152701 20000 |
63 20 | x | = | 25167 200 | − | 1152701 20000 |
63 20 | x | = | 1363999 20000 |
| x | = | 1363999 20000 | ÷ | 63 20 |
| = | 1363999 20000 | × | 20 63 |
| = | 194857 1000 | × | 1 9 |
| x | = | 194857 9000 |
| x | = | 21.650778 |