The answer I believe is -36
Answer:
simplified equation is 10y-10x
Step-by-step explanation:
8(y-x) -2(x-y)
multiple 8 and 2 by the corresponding parentheses
8y-8x -2x +2y
10y -10x
Answer:

Step-by-step explanation:

I couldn't find anyone that led to the answer 20 but the one that ended closest to 20 is the last one.