75 | × | 39 5 | + | 1307 100 | x | = | ( | 75 | + | x | ) | × | 797 100 |
方程左边 = | 585 | + | 1307 100 | x |
585 | + | 1307 100 | x | = | ( | 75 | + | x | ) | × | 797 100 |
方程右边 = | 75 | × | 797 100 | + | x | × | 797 100 |
= | 2391 4 | + | x | × | 797 100 |
585 | + | 1307 100 | x | = | 2391 4 | + | 797 100 | x |
1307 100 | x | − | 797 100 | x | = | 2391 4 | − | 585 |
51 10 | x | = | 2391 4 | − | 585 |
51 10 | x | = | 51 4 |
x | = | 51 4 | ÷ | 51 10 |
= | 51 4 | × | 10 51 |
= | 1 2 | × | 5 |
x | = | 5 2 |
x | = | 2.5 |