8 | ÷ | 80 | + | x | ( | 32 | − | 8 | ) | ÷ | 80 | = | 1 |
方程左边 = | 1 10 | + | x | ( | 32 | − | 8 | ) | × | 1 80 |
1 10 | + | x | ( | 32 | − | 8 | ) | × | 1 80 | = | 1 |
方程左边 = | 1 10 | + | x | × | 32 | × | 1 80 | − | x | × | 8 | × | 1 80 |
= | 1 10 | + | x | × | 2 5 | − | x | × | 1 10 |
= | 1 10 | + | 3 10 | x |
1 10 | + | 3 10 | x | = | 1 |
3 10 | x | = | 1 | − | 1 10 |
3 10 | x | = | 9 10 |
x | = | 9 10 | ÷ | 3 10 |
= | 9 10 | × | 10 3 |
= | 3 | × | 1 |
x | = | 3 |