# How do you solve 7/5=x/3?

Aug 25, 2016

$\frac{21}{5}$

#### Explanation:

In order to remove the $3$ by which the unknown $x$ is divided by, we must multiply by both sides of the equation by $3$, thus isolating $x$:

$\frac{7}{5} \times 3 = \frac{x}{3} \times 3$

If both sides of the equation were not multiplied by 3, we would not maintain equality across the equation, thus reaching an incorrect answer.

Therefore, simplifying the above we get:

$\frac{21}{5} = x$