Question

De o valor da expressão :

(1/5+1/3):(3/5-1/15)+0,999...

Answer 1

0,999... aproxima-se iguala a 1.
(1/5 + 1/3) = (3x1 + 5x1)/15 = (3+5)/15 = 8/15
(3/5 - 1/15) = (3x3 -1)/15 = (9-1)/15 = 8/15

(8/15) : (8/15) + 1 = 1+1= 2.
=D...