-2 is the right
a.
step-by-step explanation:
step 1 distribute 2 to every term in the parentheses
step 2 add 10 on both sides of the equal sign
b. would be the answer : )
step 1: add -16x to both sides.
16x−4y+−16x=64+−16x
−4y=−16x+64
step 2: divide both sides by -4.
−4y /-4 = -16x + 64/-4
answer: y=4x−16
hope i'm right