200 | ( | 200 | × | 500 | + | 200 | x | + | 500 | x | ) | = | 10000 | x |
方程左边 = | 200 | × | 200 | × | 500 | + | 200 | × | 200 | x | + | 200 | × | 500 | x |
= | 20000000 | + | 40000 | x | + | 100000 | x |
= | 20000000 | + | 140000 | x |
20000000 | + | 140000 | x | = | 10000 | x |
140000 | x | − | 10000 | x | = | - | 20000000 |
130000 | x | = | - | 20000000 |
x | = | - | 20000000 | ÷ | 130000 |
= | - | 20000000 | × | 1 130000 |
= | - | 2000 | × | 1 13 |
x | = | - | 2000 13 |
x | = | - 153.846154 |