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

1 Answer
Aug 25, 2016

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:

7/5xx3=x/3xx3

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:

21/5=x