Question

Resolver suprimiendo signos de agrupación
a.-5-(+11)-(-20)
b.9-[(-5)-(+7)]
c.-7-[(-3)-(-9)]
d.-11-[(+6)-(+4)]
e.+8-[(+5)-(-9)]
f.(+4)+[(+3)+(-7)]+(+1)
g.–(-3)+{(-5)-[(+8)+(-10)]}
AIUDA!!!

Answer 1

A) -5-(11)-(-20)
= -5-11+20
=-16+20
=4 R//
B) 9-[(-5)-(7)]
=9-(-5-7)
=9-(-12)
=9+12
= 21 R//
C) -7-[(-3)-(-9)]
=-7-(-3+9)
=-7-(6)
=-7-6
= -13
D) -11-[(6)-(4)]
=-11-(6-4)
=-11-(2)
=-13