Question

resultado de los siguientes problemas:
(+12)+(+5)=
(-5)+(-9)=
(-5)+(+8)
(+11)+(-20)
469|-375|

Answer 1

$( + 12) + ( + 5) \\ + 12 + 5 \\ + 17 \\ ( - 5) + ( - 9) \\ - 5 + - 9 \\ - 14 \\ ( - 5) + ( + 8) \\ - 5 + 8 \\ 3$
(+11)+(-20)
+11+-20
-9

Answer 2

(+12)+(+5)=12+5=17

(-5)+(-9)=-5-9=-14

(-5)+(+8)=-5+8=3

(+11)+(-20)=11-20=-9

469|-375|=469-375=94