| ( | 302 5 | + | 461 10 | + | x | ) | ÷ | 3 | × | 50 100 | + | 279 5 | × | 50 100 | = | 50 |
| 方程左边 = | ( | 302 5 | + | 461 10 | + | x | ) | × | 1 6 | + | 279 10 |
| ( | 302 5 | + | 461 10 | + | x | ) | × | 1 6 | + | 279 10 | = | 50 |
| 方程左边 = | 302 5 | × | 1 6 | + | 461 10 | × | 1 6 | + | x | × | 1 6 | + | 279 10 |
| = | 151 15 | + | 461 60 | + | x | × | 1 6 | + | 279 10 |
| = | 913 20 | + | 1 6 | x |
913 20 | + | 1 6 | x | = | 50 |
1 6 | x | = | 50 | − | 913 20 |
1 6 | x | = | 87 20 |
| x | = | 87 20 | ÷ | 1 6 |
| = | 87 20 | × | 6 |
| = | 87 10 | × | 3 |
| x | = | 261 10 |
| x | = | 26.1 |