Question

Resolva as expressões numéricas

a) (18x 1/4)÷ (1/2 - 1/3)

b) (3- 1/3 x ( 7/5 + 1/2) ÷ 38/45

Me ajudem

Answer 1

A)(18\1X1\4):(1\2-1\3)
   (9\2):(3\6-2\6)
    9\2:1\6=9\2X6\1=27\1.
B) (3\1-1\3)x(7\5+1\2):38\45
     (9\3-1\3)x(14\10+5\10):38\45
     (8\3x19\10):38\45
     (76\15:38\45=76\15x45\38=342\57:3=114\19:19=6\1.
Espero ter ajudado as que vc n entendeu e só simplificar beijão.