Jawabanmu

2014-06-09T00:28:33+07:00
2/x + 1/y = 1  ................(1)
2/x - 4/y = 16-  ..............(2)
         5/y = - 15
y = 5/-15 = - 1/3
Pers (1)   
2/x + 1/(-1/3) = 1
2/x - 3 = 1
2/x = 4
x = 2/4 = 1/2

1/(x+y) = 1/(1/2 - 1/3)
             = 1/(1/6)
             = 6
1/x + y = 1/(1/2) - 1/3
           = 2 - 1/3
           = 5/6