Question

Calcule
(+8)-(-2)=
(-15)+(+2)=
(+12)-(+45)=
(-21)+ (-34)=

Answer 1

(+8)-(-2)= 10

(-15)+(+2)= -13

(+12)-(+45)= -33

(-21)+ (-34)= -55

Answer 2

a)

(+8)-(-2) =

8+2 =

10

b)

(-15)+(+2) =

-15+2 =

-13

c)

(+12)-(+45) =

12-45 =

-33

d)

(-21)+(-34) =

-21-34 =

-55