Which of the given pairs of expressions are equivalent? Select all that apply.
A. 3z + 2z and 5z
B. (8x – 8x) – y and 0
C. 9.1 + 4.5a – 2.5a and 11.1a
D. -7y(3) – 3 and 0
E. y – 6(3) and y – 18
A and E are the answers. 3z+2z are the common factor and adding them together give you 5z. Question E, you just have to multiply -6 by 3 and you get y-18.
