| ( | 1843 10 | + | 3 | x | ) | ÷ | ( | 519 5 | + | x | ) | = | 3 |
| 方程两边同时乘以: | ( | 519 5 | + | x | ) |
| ( | 1843 10 | + | 3 | x | ) | = | 3 | ( | 519 5 | + | x | ) |
1843 10 | + | 3 | x | = | 3 | ( | 519 5 | + | x | ) |
1843 10 | + | 3 | x | = | 3 | × | 519 5 | + | 3 | x |
1843 10 | + | 3 | x | = | 1557 5 | + | 3 | x |
| 3 | x | − | 3 | x | = | 1557 5 | − | 1843 10 |
| 0 | x | = | 1557 5 | − | 1843 10 |
| 0 | x | = | 1271 10 |