Question

11 + _ = (-27) + 11​

Answer 1

11 + (-27) = (-27)+11

11-27 = -27+11

-16 = -16

hope it help you

Answer 2

let the unknown number by x

11 + x = (-27) + 11
-27 + 11 = -16

11 + x = -16

× = -16 - 11
= - 27

× = -27

11 + (-27) = (-27) + 11