( | X | + | 10 | ) | ÷ | ( | X | + | 100 | ) | = | 7 20 |
Multiply both sides of the equation by: | ( | X | + | 100 | ) |
( | X | + | 10 | ) | = | 7 20 | ( | X | + | 100 | ) |
X | + | 10 | = | 7 20 | ( | X | + | 100 | ) |
X | + | 10 | = | 7 20 | X | + | 7 20 | × | 100 |
X | + | 10 | = | 7 20 | X | + | 35 |
X | − | 7 20 | X | = | 35 | − | 10 |
13 20 | X | = | 35 | − | 10 |
13 20 | X | = | 25 |
X | = | 25 | ÷ | 13 20 |
= | 25 | × | 20 13 |
X | = | 500 13 |
X | = | 38.461538 |