| x | ( | 1 | + | 8 100 | ) | ÷ | x | × | ( | 1 | + | 18 100 | ) | = | 60 100 |
| 方程两边同时乘以: | x |
| x | ( | 1 | + | 8 100 | ) | ( | 1 | + | 18 100 | ) | = | 60 100 | x |
| x | × | 1 | ( | 1 | + | 18 100 | ) | + | x | × | 8 100 | ( | 1 | + | 18 100 | ) | = | 60 100 | x |
| x | × | 1 | × | 1 | + | x | × | 1 | × | 18 100 | + | x | × | 8 100 | ( | 1 | + | 18 100 | ) | = | 60 100 | x |
| x | × | 1 | + | x | × | 9 50 | + | x | × | 8 100 | ( | 1 | + | 18 100 | ) | = | 60 100 | x |
59 50 | x | + | x | × | 8 100 | ( | 1 | + | 18 100 | ) | = | 60 100 | x |
59 50 | x | + | x | × | 8 100 | × | 1 | + | x | × | 8 100 | × | 18 100 | = | 60 100 | x |
59 50 | x | + | x | × | 2 25 | + | x | × | 9 625 | = | 60 100 | x |
1593 1250 | x | = | 60 100 | x |
1593 1250 | x | − | 60 100 | x | = | 0 |
843 1250 | x | = | 0 |
| x | = | 0 | ÷ | 843 1250 |
| = | 0 | × | 1250 843 |
| x | = | 0 |
| x | = | 0 |