Question

calcule as Subtração
a)(+10)-(-20)=
b)(+18)-(+15)=
c)(-1)-(-2)=

Answer 1

a- 10
b- 83
c- -3
........

Answer 2

a) (+10)-(-20)
10+20=30

b) (+18)-(+15)
18-15=3

c) (-1)-(-2)
-1+2=1

Espero ter ajudado