7500 | ÷ | ( | a | + | 11 | ) | + | 10000 | ÷ | a | × | 2 | = | 143 |
方程两边同时乘以: | ( | a | + | 11 | ) |
7500 | + | 10000 | ÷ | a | × | 2 | ( | a | + | 11 | ) | = | 143 | ( | a | + | 11 | ) |
7500 | + | 10000 | ÷ | a | × | 2 | a | + | 10000 | ÷ | a | × | 2 | × | 11 | = | 143 | ( | a | + | 11 | ) |
7500 | + | 10000 | ÷ | a | × | 2 | a | + | 10000 | ÷ | a | × | 2 | × | 11 | = | 143 | a | + | 143 | × | 11 |
7500 | + | 20000 | ÷ | a | × | a | + | 220000 | ÷ | a | = | 143 | a | + | 1573 |
方程两边同时乘以: | a |
7500 | a | + | 20000 | ÷ | 1 | × | 1 | a | + | 220000 | = | 143 | a | a | + | 1573 | a |