622 125 | + | 4 5 | = | 16 | X | ÷ | ( | X | + | 2000 | ) |
| 方程两边同时乘以: | ( | X | + | 2000 | ) |
622 125 | ( | X | + | 2000 | ) | + | 4 5 | ( | X | + | 2000 | ) | = | 16 | X |
622 125 | X | + | 622 125 | × | 2000 | + | 4 5 | ( | X | + | 2000 | ) | = | 16 | X |
622 125 | X | + | 9952 | + | 4 5 | ( | X | + | 2000 | ) | = | 16 | X |
622 125 | X | + | 9952 | + | 4 5 | X | + | 4 5 | × | 2000 | = | 16 | X |
622 125 | X | + | 9952 | + | 4 5 | X | + | 1600 | = | 16 | X |
722 125 | X | + | 11552 | = | 16 | X |
722 125 | X | − | 16 | X | = | - | 11552 |
| - | 1278 125 | X | = | - | 11552 |
| 11552 | = | 1278 125 | X |
1278 125 | X | = | 11552 |
| X | = | 11552 | ÷ | 1278 125 |
| = | 11552 | × | 125 1278 |
| = | 5776 | × | 125 639 |
| X | = | 722000 639 |
| X | = | 1129.890454 |