30 | x | + | 17 | × | 1050 | = | 35 | x | − | 18 | × | 1050 |
方程左边 = | 30 | x | + | 17850 |
30 | x | + | 17850 | = | 35 | x | − | 18 | × | 1050 |
方程右边 = | 35 | x | − | 18900 |
30 | x | + | 17850 | = | 35 | x | − | 18900 |
30 | x | − | 35 | x | = | - | 18900 | − | 17850 |
- | 5 | x | = | - | 18900 | − | 17850 |
- | 5 | x | = | - | 36750 |
36750 | = | 5 | x |
5 | x | = | 36750 |
x | = | 36750 | ÷ | 5 |
= | 36750 | × | 1 5 |
= | 7350 | × | 1 |
x | = | 7350 |