4 5 | + | 400 | ÷ | 1650 | + | 50 | ÷ | 130 | + | X | ÷ | 108 | = | 151 50000 | ( | 860 | + | X | ) |
| 方程左边 = | 4 5 | + | 8 33 | + | 5 13 | + | X | × | 1 108 |
| = | 3061 2145 | + | 1 108 | X |
3061 2145 | + | 1 108 | X | = | 151 50000 | ( | 860 | + | X | ) |
| 方程右边 = | 151 50000 | × | 860 | + | 151 50000 | X |
| = | 6493 2500 | + | 151 50000 | X |
3061 2145 | + | 1 108 | X | = | 6493 2500 | + | 151 50000 | X |
1 108 | X | − | 151 50000 | X | = | 6493 2500 | − | 3061 2145 |
8423 1350000 | X | = | 6493 2500 | − | 3061 2145 |
8423 1350000 | X | = | 1254997 1072500 |
| X | = | 1254997 1072500 | ÷ | 8423 1350000 |
| = | 1254997 1072500 | × | 1350000 8423 |
| = | 1254997 143 | × | 180 8423 |
| X | = | 225899460 1204489 |
| X | = | 187.547964 |