Question

13=2y-3(y+4)

Answer 1

What exactly do you want? A simplification?

Answer 2

Are you trying to solve equations using the distributive property?

Answer 3

I don't udnerstand:

13 = 2y - 3(y +4)

13 = 2y - 3y - 12

13 = -1y - 12

Now the both sides nonsense:

13 = -1y + 12

13 + 12 = -1y

25 = -1y

25/-1 = y

-25 = y

Test it out:
-25 = 2y - 3 (y + 4)

-25 = 2(-25) - 3 (-25 + 4)

-25 = -50 + 75 - 12

-25 = 25 - 12

-25 = 13

Answer 4

What did I do wrong? D: