solve for y

Question

3y=4[5-3(4-y)]

Answer 1

Always start inside the parenthesis or brackets. So the first step is to turn -3(4 - y) = -12 + 3y. Then you have

 

3y = 4[5 - 12 + 3y]

 

3y = 4[-7 + 3y]

 

3y = -28 + 12y

 

Now put all the y terms on one side of the equals sign.

 

-9y = -28

 

y = 28 / 9