( | x | - | 36 | × | 10 | ) | ÷ | 10 | = | ( | x | + | 18 5 | × | 21 | ) | ÷ | 21 |
方程左边 = | x | × | 1 10 | - | 36 | × | 10 | × | 1 10 |
= | x | × | 1 10 | - | 36 |
1 10 | x | - | 36 | = | ( | x | + | 18 5 | × | 21 | ) | ÷ | 21 |
方程右边 = | x | × | 1 21 | + | 18 5 | × | 21 | × | 1 21 |
= | x | × | 1 21 | + | 18 5 |
1 10 | x | - | 36 | = | 1 21 | x | + | 18 5 |
1 10 | x | - | 1 21 | x | = | 18 5 | + | 36 |
11 210 | x | = | 18 5 | + | 36 |
11 210 | x | = | 198 5 |
x | = | 198 5 | ÷ | 11 210 |
= | 198 5 | × | 210 11 |
= | 18 | × | 42 |
x | = | 756 |