Question

calcule as subtrações
(a) (-8)-(+7)=
(b) (-5)-(+13)=
(c) (-30)-(+70)=
(d) (-72)-(+30)=

Answer 1

(a) (-8)-(+7)= - 8 - ==> - 8 - 7 ==> - 15

(b) (-5)-(+13)= - 5 - 13 ==> - 18

(c) (-30)-(+70)= - 30 - 70 ==> - 100

(d) (-72)-(+30)= - 72 - 30 ==> - 102

Answer 2

a) -8-7=-15
b)-5-13=-18
c)-30-70=-100
d)-72-30=-102

- com + é -