Question

Explain how you got the answer please

Answer 1

-2x + 12 = 2y

Add 2x on both sides,

12 = 2y + 2x

Divide by 2 on both sides,

6 = y + x -> x + y = 6

The answer is D.

Answer 2

-2x + 12 = 2y
2x + 2y = 12
divide the equation by 2
x + y = 6

answer
D. 6