I think it is B but I might be wrong
Answer:
-3. im taking this course right now so i know its correct, if you do the box method it comes out to -3.
Step-by-step explanation:
Answer:A. 10x. B. -2yz
Step-by-step explanation:
A. 4x+7x=11x
11x+(-x) = 11x-1x=10x
B. -5yz+yz=-4yz
-4yz+2yz=-2yz