54 500 | = | ( | 1 | ÷ | 1 | + | a | ) | × | 123 1000 | + | a | ÷ | ( | 1 | + | a | ) | × | 8 100 |
| 方程两边同时乘以: | ( | 1 | + | a | ) |
54 500 | ( | 1 | + | a | ) | = | ( | 1 | ÷ | 1 | + | a | ) | × | 123 1000 | ( | 1 | + | a | ) | + | a | × | 8 100 |
54 500 | × | 1 | + | 54 500 | a | = | ( | 1 | ÷ | 1 | + | a | ) | × | 123 1000 | ( | 1 | + | a | ) | + | a | × | 8 100 |
54 500 | × | 1 | + | 54 500 | a | = | 1 | ÷ | 1 | × | 123 1000 | ( | 1 | + | a | ) | + | a | × | 123 1000 | ( | 1 | + | a | ) | + | a | × | 8 100 |
27 250 | + | 54 500 | a | = | 123 1000 | ( | 1 | + | a | ) | + | a | × | 123 1000 | ( | 1 | + | a | ) | + | a | × | 8 100 |
27 250 | + | 54 500 | a | = | 123 1000 | × | 1 | + | 123 1000 | a | + | a | × | 123 1000 | ( | 1 | + | a | ) | + | 8 100 | a |
27 250 | + | 54 500 | a | = | 123 1000 | + | 123 1000 | a | + | a | × | 123 1000 | ( | 1 | + | a | ) | + | 8 100 | a |
27 250 | + | 54 500 | a | = | 123 1000 | + | 203 1000 | a | + | a | × | 123 1000 | ( | 1 | + | a | ) |
27 250 | + | 54 500 | a | = | 123 1000 | + | 203 1000 | a | + | a | × | 123 1000 | × | 1 | + | a | × | 123 1000 | a |
27 250 | + | 54 500 | a | = | 123 1000 | + | 203 1000 | a | + | a | × | 123 1000 | + | a | × | 123 1000 | a |
27 250 | + | 54 500 | a | = | 123 1000 | + | 163 500 | a | + | a | × | 123 1000 | a |