| ( | 19 4 | ( | 529 | + | X | ) | + | 107 | ) | ÷ | ( | 636 | + | X | ) | = | 23 5 |
| Multiply both sides of the equation by: | ( | 636 | + | X | ) |
| ( | 19 4 | ( | 529 | + | X | ) | + | 107 | ) | = | 23 5 | ( | 636 | + | X | ) |
19 4 | ( | 529 | + | X | ) | + | 107 | = | 23 5 | ( | 636 | + | X | ) |
19 4 | ( | 529 | + | X | ) | + | 107 | = | 23 5 | × | 636 | + | 23 5 | X |
19 4 | ( | 529 | + | X | ) | + | 107 | = | 14628 5 | + | 23 5 | X |
19 4 | × | 529 | + | 19 4 | X | + | 107 | = | 14628 5 | + | 23 5 | X |
10051 4 | + | 19 4 | X | + | 107 | = | 14628 5 | + | 23 5 | X |
10479 4 | + | 19 4 | X | = | 14628 5 | + | 23 5 | X |
19 4 | X | − | 23 5 | X | = | 14628 5 | − | 10479 4 |
3 20 | X | = | 14628 5 | − | 10479 4 |
3 20 | X | = | 6117 20 |
| X | = | 6117 20 | ÷ | 3 20 |
| = | 6117 20 | × | 20 3 |
| = | 2039 | × | 1 |
| X | = | 2039 |