Question

3) Suprimir los paréntesis y resolver: a. (−20) + (−10) = b. −3 + (−12) = c. +(− 4 + 9) – (+6) = d. +(− 5) – (− 5) = e. – (−8 + 3) + (− 5 – 19) =

Answer 1

Empezamos:

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

B)(-3) + (-12)= -15

C)+(-4+9)-(+6)=-1

D)+(-5) - (-5) = 0

E)-(-8+3)+(-5-19)=-2