Question

Qual valor da expressão ( 2/3 - 1/5) : ( 1/2 + 3/8 )

Alternativas:

a. 1/5

b. 2/3

c. 1/2

d. 8/15

e. 4/7

Answer 1

( 2/3 - 1/5 )  :  ( 1/2 + 3/8 )

= ( 10/15 - 3/15 )  :  ( 4/8 + 3/8 )

= ( 7/15 )  :  ( 7/8 )

= 7/15 * 8/7

= 8/15

Letra D.