( | 19701 500 | + | x | ) | × | 31 20 | = | 19701 500 | + | 35467 500 | − | x |
方程左边 = | 19701 500 | × | 31 20 | + | x | × | 31 20 |
= | 610731 10000 | + | x | × | 31 20 |
610731 10000 | + | 31 20 | x | = | 19701 500 | + | 35467 500 | − | x |
方程右边 = | 13792 125 | − | x |
610731 10000 | + | 31 20 | x | = | 13792 125 | − | x |
31 20 | x | + | x | = | 13792 125 | − | 610731 10000 |
51 20 | x | = | 13792 125 | − | 610731 10000 |
51 20 | x | = | 492629 10000 |
x | = | 492629 10000 | ÷ | 51 20 |
= | 492629 10000 | × | 20 51 |
= | 492629 500 | × | 1 51 |
x | = | 492629 25500 |
x | = | 19.318784 |