| ( | 2091 100 | + | 104 5 | + | 1033 50 | + | x | ) | ÷ | 4 | = | 2079 100 |
| 方程左边 = | 2091 100 | × | 1 4 | + | 104 5 | × | 1 4 | + | 1033 50 | × | 1 4 | + | x | × | 1 4 |
| = | 2091 400 | + | 26 5 | + | 1033 200 | + | x | × | 1 4 |
| = | 6237 400 | + | 1 4 | x |
6237 400 | + | 1 4 | x | = | 2079 100 |
1 4 | x | = | 2079 100 | − | 6237 400 |
1 4 | x | = | 2079 400 |
| x | = | 2079 400 | ÷ | 1 4 |
| = | 2079 400 | × | 4 |
| = | 2079 100 | × | 1 |
| x | = | 2079 100 |
| x | = | 20.79 |