4 5 | ( | 1 | + | x | ) | ÷ | 10 | + | x | = | 54 500 |
方程左边 = | 2 25 | ( | 1 | + | x | ) | + | x |
2 25 | ( | 1 | + | x | ) | + | x | = | 54 500 |
方程左边 = | 2 25 | × | 1 | + | 2 25 | x | + | x |
= | 2 25 | + | 2 25 | x | + | x |
= | 2 25 | + | 27 25 | x |
2 25 | + | 27 25 | x | = | 54 500 |
27 25 | x | = | 54 500 | − | 2 25 |
27 25 | x | = | 7 250 |
x | = | 7 250 | ÷ | 27 25 |
= | 7 250 | × | 25 27 |
= | 7 10 | × | 1 27 |
x | = | 7 270 |
x | = | 0.025926 |