| ( | 4 | x | + | 4 | ) | ÷ | 8 | × | 1 5 | = | 10 |
| Left side of the equation = | ( | 4 | x | + | 4 | ) | × | 1 40 |
| ( | 4 | x | + | 4 | ) | × | 1 40 | = | 10 |
| Left side of the equation = | 4 | x | × | 1 40 | + | 4 | × | 1 40 |
| = | 1 10 | x | + | 1 10 |
1 10 | x | + | 1 10 | = | 10 |
1 10 | x | = | 10 | − | 1 10 |
1 10 | x | = | 99 10 |
| x | = | 99 10 | ÷ | 1 10 |
| = | 99 10 | × | 10 |
| = | 99 | × | 1 |
| x | = | 99 |