( | ( | 4 | − | 6 | x | ) | ÷ | 1 100 | ) | − | 13 2 | = | ( | ( | 1 50 | − | 2 | x | ) | ÷ | 1 50 | ) | − | 15 2 |
方程左边 = | ( | 4 | − | 6 | x | ) | ÷ | 1 100 | − | 13 2 |
= | 4 | × | 100 | − | 6 | x | × | 100 | − | 13 2 |
= | 400 | − | 600 | x | − | 13 2 |
= | 787 2 | − | 600 | x |
787 2 | − | 600 | x | = | ( | ( | 1 50 | − | 2 | x | ) | ÷ | 1 50 | ) | − | 15 2 |
方程右边 = | ( | 1 50 | − | 2 | x | ) | ÷ | 1 50 | − | 15 2 |
= | 1 50 | × | 50 | − | 2 | x | × | 50 | − | 15 2 |
= | 1 | − | 100 | x | − | 15 2 |
= | - | 13 2 | − | 100 | x |
787 2 | − | 600 | x | = | - | 13 2 | − | 100 | x |
- | 600 | x | + | 100 | x | = | - | 13 2 | − | 787 2 |
- | 500 | x | = | - | 13 2 | − | 787 2 |
- | 500 | x | = | - | 400 |
400 | = | 500 | x |
500 | x | = | 400 |
x | = | 400 | ÷ | 500 |
= | 400 | × | 1 500 |
= | 4 | × | 1 5 |
x | = | 4 5 |
x | = | 0.8 |