Question

Which of the following pairs of expressions are equivalent to each other? Select the pairs of expressions that are equivalent to each other.

Hint: select more than one answer

3z + 2z and 5z

(7x - 7x) -y and 0

8.3 + 7.2 − 3.6 and 10.8

−5 (4 − 4) and 0

6 ( − 3) and 6 − 18

Answer 1

I am pretty sure the answer is 2 and 4
7x-7x=0 and (0)-y=0 therefore 0=0

-5(4-4) -20+ 20=0 therefore 0=0