| x | ÷ | 113 10 | + | ( | 8 | − | x | ) | ÷ | 79 10 | = | 21 25 |
| Left side of the equation = | 10 113 | x | + | 8 | × | 10 79 | − | x | × | 10 79 |
| = | 10 113 | x | + | 80 79 | − | x | × | 10 79 |
| = | - | 340 8927 | x | + | 80 79 |
| - | 340 8927 | x | + | 80 79 | = | 21 25 |
| - | 340 8927 | x | = | 21 25 | − | 80 79 |
| - | 340 8927 | x | = | - | 341 1975 |
341 1975 | = | 340 8927 | x |
340 8927 | x | = | 341 1975 |
| x | = | 341 1975 | ÷ | 340 8927 |
| = | 341 1975 | × | 8927 340 |
| x | = | 3044107 671500 |
| x | = | 38533 8500 |
| x | = | 4.533294 |