Question

Ajutatima va rog! Calculati: a)
11+(-13)-(-4)+(-42)
B) -21-(+15)+(-34)-(-1)
C) (3-9+11-72)+(9+3)
D) (2-53)-(-41+79)
E) (13-20-10)-(14+7)
F) |5-9|-|27-43|+|-11+3|

Answer 1

a)-40
b)-69
c)-55
d)-89
e)4
f)-4

Answer 2

$a).11+(-13)-(-4)+(-42)=-2+4-42=2-42=-40 \\ \\ b).-21-(+15)+(-34)-(-1)=-36-34+1=-70+1=-69 \\ \\ c).(3-9+11-72)+(9+3)=(-6+11-72)+12= \\ =(5-72)+12=-67+12=-55 \\ \\ d).(2-53)-(-41+79)=-51-38=-89 \\ \\ e).(13-20-10)-(14+7)=(-7-10)-21=-17-21=-38 \\ \\ f).|5-9|-|27-43|+|-11+3|=|-4|-|-16|+|-8|= \\ =4-16+8=-12+8=-4$