300 | ÷ | ( | 1 | + | 1 5 | ) | × | x | + | 400 | ÷ | x | = | 260 |
方程两边同时乘以: | ( | 1 | + | 1 5 | ) |
300 | x | + | 400 | ÷ | x | × | ( | 1 | + | 1 5 | ) | = | 260 | ( | 1 | + | 1 5 | ) |
300 | x | + | 400 | ÷ | x | × | 1 | + | 400 | ÷ | x | × | 1 5 | = | 260 | ( | 1 | + | 1 5 | ) |
300 | x | + | 400 | ÷ | x | × | 1 | + | 400 | ÷ | x | × | 1 5 | = | 260 | × | 1 | + | 260 | × | 1 5 |
300 | x | + | 400 | ÷ | x | + | 80 | ÷ | x | = | 260 | + | 52 |
300 | x | + | 400 | ÷ | x | + | 80 | ÷ | x | = | 312 |
方程两边同时乘以: | x |
300 | x | x | + | 400 | + | 80 | ÷ | 1 | × | 1 | = | 312 | x |