Question

Ejercicio 2 : Resolvé suprimiendo paréntesis y luego agrupá en la suma algebraica ( no te saltees pasos ! )

a) 18 - 5 – ( 1 + 4 – 3 ) + ( 5 – 2 ) =
b) 50 + ( 31 – 4 - 6 ) + ( 7 + 1) – ( 8 – 2 + 3 )=
c) ( 24 - 12 ) + ( 6 – 2 – 2 ) – 1 – ( 3 – 10 )=
d) 38 + [ 8 - ( 2 + 4 – 3) + 5 + ( 7 – 3 ) ] + 9 =
e) 14 - 7 + [ 2 + ( 8 -3) ] – 1 =

Answer 1

a) 18 - 5 – ( 1 + 4 – 3 ) + ( 5 – 2 ) =

   18- 5- 2 + (-3)

    18- 5- 2 -3

+18          -5-2-3= -4

18 - 4 = -14