Question

Resolva as expressões : com contas: .....
A) (1/3 +5/2-2) x (1/8 + 1)

B)4/6 + (3 1/2 + 1/3)x 2/3

C) (18 x 1/4) + (1/2 - 1/3)

POR FAVOR É TRABALHO PRA AMANHA!!!!!!

Answer 1

a) (1/3 + 5/2 - 2 ) x ( 1/8 + 1 ), resolvendo os parenteses
(1/3 + 5/2 - 2/1) x ( 1/8 + 1/1) MMc de 3,2 e 1 = 6, MMC entre 8, 1 = 8
( 1/3/2 + 5/2/3 - 2/1/6) x ( 1/8/1 + 1/1/8)
( 2/6 + 15/6 - 2/6) x ( 1/8 + 8/8)
resolvendo a multiplicação
10/6 x 9/8 = 90/ 48, simplificando = 45/24 = 15/8