13 1000 | = | ( | x | ÷ | ( | - | 580000 | ) | × | 550219 | + | 7313 | ) | ÷ | 550219 |
13 1000 | = | x | ÷ | ( | - | 580000 | ) | × | 550219 | ÷ | 550219 | + | 7313 | ÷ | 550219 |
13 1000 | = | x | ÷ | ( | - | 580000 | ) | × | 17749 17749 | + | 7313 550219 |
| 方程两边同时乘以: | ( | - | 580000 | ) |
13 1000 | ( | - | 580000 | ) | = | x | × | 17749 17749 | + | 7313 550219 | ( | - | 580000 | ) |
| - | 13 1000 | × | 580000 | = | x | × | 17749 17749 | + | 7313 550219 | ( | - | 580000 | ) |
| - | 13 1000 | × | 580000 | = | x | × | 17749 17749 | − | 7313 550219 | × | 580000 |
| - | 7540 | = | x | × | 17749 17749 | − | 4241540000 550219 |
| - | 17749 17749 | x | = | - | 4241540000 550219 | + | 7540 |
| - | 17749 17749 | x | = | - | 92888740 550219 |
92888740 550219 | = | 17749 17749 | x |
17749 17749 | x | = | 92888740 550219 |
| = | 92888740 550219 | × | 17749 17749 |
| x | = | 92888740 550219 |
| x | = | 168.821397 |