| ( | X | + | 10 | ) | × | 4 | = | ( | 3 | ÷ | 5 | + | 10 | ) | × | 5 |
| Left side of the equation = | X | × | 4 | + | 10 | × | 4 |
| = | X | × | 4 | + | 40 |
| 4 | X | + | 40 | = | ( | 3 | ÷ | 5 | + | 10 | ) | × | 5 |
| Right side of the equation = | 3 | ÷ | 5 | × | 5 | + | 10 | × | 5 |
| = | 3 | + | 50 |
| = | 53 |
| 4 | X | + | 40 | = | 53 |
| 4 | X | = | 53 | − | 40 |
| 4 | X | = | 13 |
| X | = | 13 | ÷ | 4 |
| = | 13 | × | 1 4 |
| X | = | 13 4 |
| X | = | 3.25 |