Question

23. :Resolva as expressões numéricas.

a.[4+35 : 7+ 2 × (15-9×1) ]=

( todas as contas armadas por favor)

b.42 : 7 - 4 + 5 =

c.{[18 + (4x6) : 6 -(2x2)] + 18} =

d.{50 - 3 x [21 :(3+4)] - 1 + 2 x 5} =

Answer 1

A= [4+35 : 7+ 2 × (15-9×1) ]= [4+35 : 7+ 2 × (6)]= 4+5+12 = 21

B= 42 : 7 - 4 + 5 = 6-4+5= 7

C= {[18 + (4x6) : 6 -(2x2)] + 18} = {[18 + (24) : 6 -(4)] + 18} = {[18 + 4 -(4)] + 18} = 0

D= {50 - 3 x [21 :(3+4)] - 1 + 2 x 5} =  {50 - 3 x [21 :(7)] - 1 + 2 x 5} = 
{50 - 3 x [3] - 1 + 2 x 5} = {50 - 9- 1 + 10} = 50