simplify 3y + 4(y - 3) + 8

Question

I need to simplify. My answer is y = 4/7. Just need to know is this correct?

Answer 1

What you have presented is an expression, not an equation, as there is no equal sign listed in the problem. The expression simplifies to:

 

3y + 4(y - 3) + 8 = 3y + 4y - 12 + 8 = 7y - 12 + 8 = 7y - 4

 

If the expression were set equal to 0, then we would have:

 

7y - 4 = 0

 

7y = 4

 

y = 4/7