50000 | = | 1800 | − | 50000 | ( | x | − | 50 | ) |
方程右边 = | 1800 | − | 50000 | x | + | 50000 | × | 50 |
= | 1800 | − | 50000 | x | + | 2500000 |
= | 2501800 | − | 50000 | x |
50000 | = | 2501800 | − | 50000 | x |
50000 | x | = | 2501800 | − | 50000 |
50000 | x | = | 2451800 |
x | = | 2451800 | ÷ | 50000 |
= | 2451800 | × | 1 50000 |
= | 12259 | × | 1 250 |
x | = | 12259 250 |
x | = | 49.036 |