Question

1-calcule:
a-(+11)+(-9)=
b-(-72)+(+60)=
c-(+130)+(-30)=
d-(-75)+(+48)=
e-(-21)+(+48)=
f-(-100)+(+109)=
g-(+91)+(-221)=
h-(-85)+(+100)=

Answer 1

A) 2
B) -12
C) 100
D) -27
E) 27
F) 9
G) -130
H) 15