Answer:
take a ruler and measure each side and add it together.
and what's with the title
Step-by-step explanation:
4x - 5y
GCF is 8
as the picture shown
x=8
x-20=-3(x-4)
x-20=-3x+12
x-(-3x)-20=12
x+3x-20=12
4x-20=12
4x=12+20
4x=32
x=32/4
