Answer these this question please

Answer:
A. (-8)+(-5)=-13
B. (+16)-(-7)=23
C. (-11)-(-4)=-7
D. (-17)+(+52)=35
E. (-5)+(-8)+(2)=-11
F. (+6)+(-8)-(+3)=-5
G. (-4)-(-7)+(+21)=24
H. (-1)+(-17)-(-6)=-12
Step-by-step explanation:
these answer should be correct.
Hope this helps