Answer:
you must do the same thing on both sides
Explanation:
example:
say you have the following equation:
5+X=10
you will subtract 5 from both sides of the equation
5+X-5=10-5 ---> X=5
If your dealing with Multiplication or division, it's still the same concept
say 5X=10 you will then divide BOTH SIDES by 5 to solve for X
5X / 5 = 10/5 ---> X=2
HOPE THIS HELPS!