225 4 | ÷ | ( | 15 | + | x | ) | = | 3 5 |
| Multiply both sides of the equation by: | ( | 15 | + | x | ) |
225 4 | = | 3 5 | ( | 15 | + | x | ) |
225 4 | = | 3 5 | × | 15 | + | 3 5 | x |
225 4 | = | 9 | + | 3 5 | x |
| - | 3 5 | x | = | 9 | − | 225 4 |
| - | 3 5 | x | = | - | 189 4 |
189 4 | = | 3 5 | x |
3 5 | x | = | 189 4 |
| x | = | 189 4 | ÷ | 3 5 |
| = | 189 4 | × | 5 3 |
| = | 63 4 | × | 5 |
| x | = | 315 4 |
| x | = | 78.75 |