Question

5) Se x = 1 – [ 6 + ( 4 – 3– 5 ) – (– 9+ 6)] e y = (12 + 13) : (+ 5 – 30) – 4 : (+3 – 7) – (– 4 – 8), calcule:

a) o valor de x *
b) o valor de y *
c) o valor x – y *
d) x + y *

Answer 1

Explicação passo-a-passo:

a)

x= 1 -[ 6+(4-8)-(-3)]

x= 1 - [ 6 +(-4) +3]

x= 1 - [ 6-4+3]

x= 1 - [ +5]

x= 1 - 5

x= - 4

b) y= 25 : (-25) - 4: ( -4) - ( - 12)

y= - 1 + 1 +12

y= 12

c) x - y= - 4 - (+12)= -4-12= - 16

d) x+y= -4+12= +8