7th grade math help me plzz

Answer:
a) -7+(-8) *Addition plus subtraction make subtraction
-7-8= -15
b) -9+(-3) *addition plus subtraction make subtraction
-9-3= -12
Hope this helps!
Answer:
Answer:
A: -25
B: -12
Step-by-step explanation:
Adding a negative is just like subtracting a negative. So you can just say -7 -8 = 15 and -9 -3 = 12.