Answer:
Step-by-step explanation:
(-9 + 12) - (-7) = 4 -(-7)
= 4 + 7
= 11
Sign of 9 is (-)
Sign of 12 is +. So subtract and the answer will have the sign of bigger number
12 - 9 = 4 and bigger number is 12 and sign of 12 is +.so +4
