( | 42309 1000 | + | x | ) | × | 5 2 | = | 19701 500 | + | 18051 250 | − | x |
方程左边 = | 42309 1000 | × | 5 2 | + | x | × | 5 2 |
= | 42309 400 | + | x | × | 5 2 |
42309 400 | + | 5 2 | x | = | 19701 500 | + | 18051 250 | − | x |
方程右边 = | 55803 500 | − | x |
42309 400 | + | 5 2 | x | = | 55803 500 | − | x |
5 2 | x | + | x | = | 55803 500 | − | 42309 400 |
7 2 | x | = | 55803 500 | − | 42309 400 |
7 2 | x | = | 11667 2000 |
x | = | 11667 2000 | ÷ | 7 2 |
= | 11667 2000 | × | 2 7 |
= | 11667 1000 | × | 1 7 |
x | = | 11667 7000 |
x | = | 1.666714 |