Question

Which expression is equivalent to -21?

A. 9-(-12)
B. 9+(-12)
C. -9+12
D. -9-12

Answer 1

Answer:a

Step-by-step explanation:because -9 +-12=_21

Answer 2

D. -9-12=-21

Explanation:

Which expression is equivalent to -21?

A. 9-(-12) = 9+12 = 21

B. 9+(-12) = 9-12 = -3

C. -9+12 = -9+12 = 3

D. -9-12=-21