36269 10 | = | 189 10 | x | + | ( | 131 | - | x | ) | × | 289 10 |
方程右边 = | 189 10 | x | + | 131 | × | 289 10 | - | x | × | 289 10 |
= | 189 10 | x | + | 37859 10 | - | x | × | 289 10 |
= | - | 10 | x | + | 37859 10 |
36269 10 | = | - | 10 | x | + | 37859 10 |
10 | x | = | 37859 10 | - | 36269 10 |
10 | x | = | 159 |
x | = | 159 | ÷ | 10 |
= | 159 | × | 1 10 |
x | = | 159 10 |
x | = | 15.9 |