Question

4y + 4x = -28 and
x = 2y - 4

Answer 1

answer

Explanation:

Simplifying

4y = 4x + -28

Reorder the terms:

4y = -28 + 4x

Solving

4y = -28 + 4x

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Divide each side by '4'.

y = -7 + x

Simplifying

y = -7 + x

Answer 2

4y+4(2y-4)=-28
4y+8y-16=-28
12y-16=-28
12y=-12
y=-1