( | 120000 | − | 110500 | − | x | ) | ÷ | 120000 | × | 100 100 | = | 10 100 |
方程左边 = | ( | 120000 | − | 110500 | − | x | ) | × | 1 120000 |
( | 120000 | − | 110500 | − | x | ) | × | 1 120000 | = | 10 100 |
方程左边 = | 120000 | × | 1 120000 | − | 110500 | × | 1 120000 | − | x | × | 1 120000 |
= | 1 | − | 221 240 | − | x | × | 1 120000 |
= | 19 240 | − | 1 120000 | x |
19 240 | − | 1 120000 | x | = | 10 100 |
- | 1 120000 | x | = | 10 100 | − | 19 240 |
- | 1 120000 | x | = | 1 48 |
- | 1 48 | = | 1 120000 | x |
1 120000 | x | = | - | 1 48 |
x | = | - | 1 48 | ÷ | 1 120000 |
= | - | 1 48 | × | 120000 |
= | - | 1 | × | 2500 |
x | = | - | 2500 |