7 10 | x | × | 4157 500 | × | 523 | + | 1 10 | = | 135191 5000 | × | 70 | ( | 1 | − | x | ) | × | 2 |
| 方程左边 = | 15218777 5000 | x | + | 1 10 |
15218777 5000 | x | + | 1 10 | = | 135191 5000 | × | 70 | ( | 1 | − | x | ) | × | 2 |
| 方程右边 = | 946337 250 | ( | 1 | − | x | ) |
15218777 5000 | x | + | 1 10 | = | 946337 250 | ( | 1 | − | x | ) |
| 方程右边 = | 946337 250 | × | 1 | − | 946337 250 | x |
| = | 946337 250 | − | 946337 250 | x |
15218777 5000 | x | + | 1 10 | = | 946337 250 | − | 946337 250 | x |
15218777 5000 | x | + | 946337 250 | x | = | 946337 250 | − | 1 10 |
34145517 5000 | x | = | 946337 250 | − | 1 10 |
34145517 5000 | x | = | 473156 125 |
| x | = | 473156 125 | ÷ | 34145517 5000 |
| = | 473156 125 | × | 5000 34145517 |
| = | 473156 | × | 40 34145517 |
| x | = | 18926240 34145517 |
| x | = | 0.554282 |