Question

ayuda pliss
Calcular el valor de las siguientes operaciones combinadas:
a) - 5 – (-8) + {-9 – [-6 + (5 - 9)] – [9 – 7 - 6]}
b) – {-7 + [-6 + 15 – (-9 + 13 + 17) – (6 - 5)]}
c) - 9 -[15 – (7 - 8) - 6] – [9 – (6 - 3)]
d) – {14 – [9 – (6 - 17) - 3] – [-5 – (8 – 3 - 7)]}
e) – 19 – [-7 – (6 – 3 - 19)] – [-9 – 2 - 7]

Answer 1

Respuesta:

A) 8

B) 20

C) -7

D) 0

E) - 10

Explicación paso a paso:

A) - 5-(-8)+{-9-[-6+(5-9)]-[9-7-6]}=

-5+8+{-9-[-6+(-4)]-[-4]}=

3+{-9-[-6-4]+4}=

3+{-9-[-10]+4}=

3+{-9+10+4}=

3+{5} =3+5=8

B) -{-7+[-6+15-(-9+13+17)-(6-5)]}=

-{-7+[9-(21)-(1)]}=

-{-7+[9-21-1]}=

-{-7+[-13]}=

-{-7-13}=-{-20}=20

C) - 9-[15-(7-8)-6]-[9-(6-3)]=

-9-[15-(-1)-6]-[9-(3)]=

-9-[15+1-6]-[9-3]=

-9-[10]-[6]=-9-10-6=-7

D) -{14-[9-(6-17)-3]-[-5-(8-3-7)]}=

-{14-[9-(-11)-3]-[-5-(-2)]}=

-{14-[9+11-3]-[-5+2]}=

-{14-[17]-[-3]}=

-{14-17+3}=0

E) - 19-(-7-(6-3-19))-(-9-2-7)=

-19-(-7-(-16))-(-18)=

-19-(-7+16)+18=

-19-(9)+18=

-19-9+18=-10