209000000 | = | 69 5 | × | 200 | ( | 385 | − | x | ÷ | 2 | ) |
方程右边 = | 2760 | ( | 385 | − | x | ÷ | 2 | ) |
209000000 | = | 2760 | ( | 385 | − | x | ÷ | 2 | ) |
方程右边 = | 2760 | × | 385 | − | 2760 | x | ÷ | 2 |
= | 1062600 | − | 1380 | x |
209000000 | = | 1062600 | − | 1380 | x |
1380 | x | = | 1062600 | − | 209000000 |
1380 | x | = | - | 207937400 |
x | = | - | 207937400 | ÷ | 1380 |
= | - | 207937400 | × | 1 1380 |
= | - | 10396870 | × | 1 69 |
x | = | - | 10396870 69 |
x | = | - 150679.275362 |