| 25 | × | 157 50 | × | 3 5 | ( | x | − | 20 | ) | = | ( | 2 | × | 157 50 | × | 147 1000 | ( | 560 | − | x | ) | ) | ÷ | 1823 10000 |
| 方程左边 = | 471 10 | ( | x | − | 20 | ) |
471 10 | ( | x | − | 20 | ) | = | ( | 2 | × | 157 50 | × | 147 1000 | ( | 560 | − | x | ) | ) | ÷ | 1823 10000 |
| 方程左边 = | 471 10 | x | − | 471 10 | × | 20 |
| = | 471 10 | x | − | 942 |
471 10 | x | − | 942 | = | ( | 2 | × | 157 50 | × | 147 1000 | ( | 560 | − | x | ) | ) | ÷ | 1823 10000 |
| 方程右边 = | 2 | × | 157 50 | × | 147 1000 | ( | 560 | − | x | ) | × | 10000 1823 |
| = | 46158 9115 | ( | 560 | − | x | ) |
| = | 46158 9115 | × | 560 | − | 46158 9115 | x |
| = | 5169696 1823 | − | 46158 9115 | x |
471 10 | x | − | 942 | = | 5169696 1823 | − | 46158 9115 | x |
471 10 | x | + | 46158 9115 | x | = | 5169696 1823 | + | 942 |
950949 18230 | x | = | 5169696 1823 | + | 942 |
950949 18230 | x | = | 6886962 1823 |
| x | = | 6886962 1823 | ÷ | 950949 18230 |
| = | 6886962 1823 | × | 18230 950949 |
| = | 4874 1823 | × | 18230 673 |
| x | = | 88853020 1226879 |
| x | = | 72.421991 |