0 | = | 70 100 | − | 15 100 | − | ( | 1 | + | 10 100 | ) | ÷ | 10 100 | × | 8 100 | ( | 1 | − | x | ) |
方程右边 = | 70 100 | − | 15 100 | − | ( | 1 | + | 10 100 | ) | × | 4 5 | ( | 1 | − | x | ) |
= | 11 20 | − | ( | 1 | + | 10 100 | ) | × | 4 5 | ( | 1 | − | x | ) |
0 | = | 11 20 | − | ( | 1 | + | 10 100 | ) | × | 4 5 | ( | 1 | − | x | ) |
方程右边 = | 11 20 | − | 1 | × | 4 5 | ( | 1 | − | x | ) | − | 10 100 | × | 4 5 | ( | 1 | − | x | ) |
= | 11 20 | − | 4 5 | ( | 1 | − | x | ) | − | 2 25 | ( | 1 | − | x | ) |
= | 11 20 | − | 4 5 | × | 1 | + | 4 5 | x | − | 2 25 | ( | 1 | − | x | ) |
= | 11 20 | − | 4 5 | + | 4 5 | x | − | 2 25 | ( | 1 | − | x | ) |
= | - | 1 4 | + | 4 5 | x | − | 2 25 | ( | 1 | − | x | ) |
= | - | 1 4 | + | 4 5 | x | − | 2 25 | × | 1 | + | 2 25 | x |
= | - | 1 4 | + | 4 5 | x | − | 2 25 | + | 2 25 | x |
= | - | 33 100 | + | 22 25 | x |
0 | = | - | 33 100 | + | 22 25 | x |
- | 22 25 | x | = | - | 33 100 | − | 0 |
- | 22 25 | x | = | - | 33 100 |
33 100 | = | 22 25 | x |
22 25 | x | = | 33 100 |
x | = | 33 100 | ÷ | 22 25 |
= | 33 100 | × | 25 22 |
= | 3 4 | × | 1 2 |
x | = | 3 8 |
x | = | 0.375 |