So first you do distributive property. Multiply everything inside by 3. So you will get 3*x = 3x and 3*4 = 12. Now that you did that you got rid of the parenthesis and you are left with
So first you do distributive property. Multiply everything inside by 3. So you will get 3*x = 3x and 3*4 = 12. Now that you did that you got rid of the parenthesis and you are stuck with y=3x+12