Mohon bantuannya :) 1/x + 1/y = 8/15 -1/x + 1/y = 2/15 ??

1/x +1/y=8/15
-1/x+1/y=2/15
___________________ +
2/y =10/15
y= 2 X15:10
y=3
1/x+1/3=8/15
1/x= 8/15 - 5/15
1/x=3/15
x=1×15:3
x=5