| ( | 5 | × | 220 | + | 92 | x | ) | ÷ | 1221 50 | = | ( | 92 | ( | 30 | − | x | ) | + | 80 | ( | 1349 50 | + | x | ) | ) | ÷ | 2849 50 |
| 方程左边 = | 5 | × | 220 | × | 50 1221 | + | 92 | x | × | 50 1221 |
| = | 5000 111 | + | 4600 1221 | x |
5000 111 | + | 4600 1221 | x | = | ( | 92 | ( | 30 | − | x | ) | + | 80 | ( | 1349 50 | + | x | ) | ) | ÷ | 2849 50 |
| 方程右边 = | 92 | ( | 30 | − | x | ) | × | 50 2849 | + | 80 | ( | 1349 50 | + | x | ) | × | 50 2849 |
| = | 4600 2849 | ( | 30 | − | x | ) | + | 4000 2849 | ( | 1349 50 | + | x | ) |
| = | 4600 2849 | × | 30 | − | 4600 2849 | x | + | 4000 2849 | ( | 1349 50 | + | x | ) |
| = | 138000 2849 | − | 4600 2849 | x | + | 4000 2849 | ( | 1349 50 | + | x | ) |
| = | 138000 2849 | − | 4600 2849 | x | + | 4000 2849 | × | 1349 50 | + | 4000 2849 | x |
| = | 138000 2849 | − | 4600 2849 | x | + | 107920 2849 | + | 4000 2849 | x |
| = | 245920 2849 | − | 600 2849 | x |
5000 111 | + | 4600 1221 | x | = | 245920 2849 | − | 600 2849 | x |
4600 1221 | x | + | 600 2849 | x | = | 245920 2849 | − | 5000 111 |
34000 8547 | x | = | 245920 2849 | − | 5000 111 |
34000 8547 | x | = | 352760 8547 |
| x | = | 352760 8547 | ÷ | 34000 8547 |
| = | 352760 8547 | × | 8547 34000 |
| = | 8819 | × | 1 850 |
| x | = | 8819 850 |
| x | = | 10.375294 |