Respostas

2014-05-19T20:27:29-03:00
X + 1/5 = x/3 ⇒  x - x/3 = -1/5 ,  mmc(3,5) = 15
15x - 5x = - 3 ⇒  10x = - 3 ⇒  x = -3/10


                     Resposta:  x = - 3/10
2014-05-19T20:30:32-03:00
X+1/5=x/3 
 Tirando o MMC 1,5,3
(15x+3=5x)/15}
 15x-5x=-3
10x=-3
x=- 3/10
1 5 1