( | x | - | 2000 | ) | × | 3 4 | ÷ | 30000 | = | ( | x | - | 6000 | ) | × | 3 4 | ÷ | 30000 |
方程左边 = | ( | x | - | 2000 | ) | × | 1 40000 |
( | x | - | 2000 | ) | × | 1 40000 | = | ( | x | - | 6000 | ) | × | 3 4 | ÷ | 30000 |
方程左边 = | x | × | 1 40000 | - | 2000 | × | 1 40000 |
= | x | × | 1 40000 | - | 1 20 |
1 40000 | x | - | 1 20 | = | ( | x | - | 6000 | ) | × | 3 4 | ÷ | 30000 |
方程右边 = | ( | x | - | 6000 | ) | × | 1 40000 |
1 40000 | x | - | 1 20 | = | ( | x | - | 6000 | ) | × | 1 40000 |
方程右边 = | x | × | 1 40000 | - | 6000 | × | 1 40000 |
= | x | × | 1 40000 | - | 3 20 |
1 40000 | x | - | 1 20 | = | 1 40000 | x | - | 3 20 |
1 40000 | x | - | 1 40000 | x | = | - | 3 20 | + | 1 20 |
0 | x | = | - | 3 20 | + | 1 20 |
0 | x | = | - | 1 10 |