Question

Solve the equation: 3y + 20 = 3 + 2y

Answer 1

3y + 20 = 3 + 2y

1y + 20 = 3

y = -17

Answer 2

`y=-17`

Explanation:

`3y+20=3+2y`

Start by subtracting 20 from each side...

`3y+20-20=3+2y-20\\3y=2y-17`

Now, subtract "2y" from each side...

`3y-2y=2y-2y-17\\y=-17`

Next, let's substitute -17 for y in the original equation to check our answer...

`3(-17)+20=3+2(-17)\\-51+20=3+(-34)\\-31=3-34\\-31=-31\rightarrow Correct!`

Therefore the answer is:

`y=-17`