| ( | 19 4 | × | 645 | + | 1 | + | 5 | x | ) | ÷ | ( | x | + | 646 | ) | = | 19 4 |
| Multiply both sides of the equation by: | ( | x | + | 646 | ) |
| ( | 19 4 | × | 645 | + | 1 | + | 5 | x | ) | = | 19 4 | ( | x | + | 646 | ) |
19 4 | × | 645 | + | 1 | + | 5 | x | = | 19 4 | ( | x | + | 646 | ) |
19 4 | × | 645 | + | 1 | + | 5 | x | = | 19 4 | x | + | 19 4 | × | 646 |
12255 4 | + | 1 | + | 5 | x | = | 19 4 | x | + | 6137 2 |
12259 4 | + | 5 | x | = | 19 4 | x | + | 6137 2 |
| 5 | x | − | 19 4 | x | = | 6137 2 | − | 12259 4 |
1 4 | x | = | 6137 2 | − | 12259 4 |
1 4 | x | = | 15 4 |
| x | = | 15 4 | ÷ | 1 4 |
| = | 15 4 | × | 4 |
| = | 15 | × | 1 |
| x | = | 15 |