Question

hola ayuda con esto
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Answer 1

Explicación paso a paso:

(-8)+(-12)=-(8+12)=-20

-8-12=-8-12=-20

-20 = -20 = -20

(+15)+(+12)=15+12= +27

(-18)+(-13)=-18-13= -31

(-25)+(-16)=-25-16= -41

(+18)+(+23)=18+23= +41

(-29)+(-42)=-29-42= -71

(+29)+(+31)=29+31= +50

(-18)+(-46)= - 18-46= -64

(-32)+(-57)= - 32-57= -90

(-59)+(-61)= - 59-61= -120

(+2)+(+69)= 2+69= +71

(+49)+(72)= 49 + 72= +121