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

1 Answer
Aug 25, 2016

Answer:

#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#