x | = | ( | 100 | + | x | ) | ( | 13 100 | − | 9 100 | ) |
方程右边 = | 100 | ( | 13 100 | − | 9 100 | ) | + | x | ( | 13 100 | − | 9 100 | ) |
= | 100 | × | 13 100 | − | 100 | × | 9 100 | + | x | ( | 13 100 | − | 9 100 | ) |
= | 13 | − | 9 | + | x | ( | 13 100 | − | 9 100 | ) |
= | 4 | + | x | ( | 13 100 | − | 9 100 | ) |
= | 4 | + | x | × | 13 100 | − | x | × | 9 100 |
= | 4 | + | 1 25 | x |
x | = | 4 | + | 1 25 | x |
x | − | 1 25 | x | = | 4 |
24 25 | x | = | 4 |
x | = | 4 | ÷ | 24 25 |
= | 4 | × | 25 24 |
= | 1 | × | 25 6 |
x | = | 25 6 |
x | = | 4.166667 |