Question

(1/3 - 1/10 x 4/3) =

Answer 1

resolve primeiro a multiplicação...

1/3 - 4/30

iguala as casas...

10/30 - 4/30

6/30

simplificando por 6...

1/5

Answer 2

= (1/3 - 1/10 x 4/3)
= [ 1/3 - 4/30 (:2)/(:2)])
= (1/3 - 2/15)

MMC (3,15)= 15

3,15:3
1,5:5
1,1 = 3.5 = 15

= (5 - 2)/15
= 3/15 (:3)/(:3)
= 1/5