Question

(21+4) + (-5+5) -12 =

(-3 -9) / 3 =
(-6 - 10) / (-4)

Answer 1

(21+4) + (-5+5) -12 = 13

(-3 -9) / 3 = -4

(-6 - 10) / (-4) = 4

Explanation:

I hope this helps.