Question

Calcule:
a)(+11)+(-9)=
b)(-72)+(+60)=
c)(+130)+(+30)=
d)(-75)+(+48)=
e)(-21)+(20)=
f)(-100)+(+109)=
g)(+91)+(221)=

Me ajudem por favor!!!

Answer 1

+11 -9=2
-72 +60=-12
130 +30=160
-75 +48=-27
-21+20=-1
-100+109=9
+91+221=312

Answer 2

a)2
b)-12
c)160
d)-27
e)-1
f)9
g)312