Question

ayudenme plis es para hoy :"(

Answer 1

Respuesta:

a)-5+10-4+8+3-2+3-13

=5−4+8+3−2+3−13=  

=1+8+3−2+3−13=

=9+3−2+3−13=

=12−2+3−13=

=10+3−13=

=13−13=

=0

b)+34-65+42-67+20-13+56

=+(−31)+42−67+20−13+56=  

=+11−67+20−13+56=

=+(−56)+20−13+56=

=+(−36)−13+56=

=+(−49)+56=

=7

=+(−31)+42−67+20−13+56=  

=+11−67+20−13+56=

=+(−56)+20−13+56=

=+(−36)−13+56=

=+(−49)+56=

=7

c)-24+3-54+89-78+9-71-23+5

=−21−54+89−78+9−71−23+5=  

=−75+89−78+9−71−23+5=

=14−78+9−71−23+5=

=−64+9−71−23+5=

=−55−71−23+5=

=−126−23+5=

=−149+5=

=−144

d)13-43+68-34+86-36

=−30+68−34+86−36=  

=38−34+86−36=

=4+86−36=

=90−36=

=54

e)(-6)+(+5)+(-6)+(-3)+(34)+(-31)=−7

f)(-39)+(-40)+(82)+(-10)+(90)= 83

g)(-83)+(-97)+(81)+(-39)+(+49)=−89

h)(-84)+(-39)+(-72)+(89)+(-15)=−121