\(\frac{1}{x} + \frac{2}{y} = \frac{1}{3}\)
Help. I don't know how to start
1/x + 2/y = 1/3
( 2x + y) / xy = 1/3 cross-multiply
3 ( 2x + y) = xy
6x + 3y = xy
6x = xy - 3y
6x = y ( x - 3)
y = 6x / ( x - 3)
x y
-15 5
-6 -4
-3 3
1 -3
2 -12
4 24
5 15
6 12
9 9
12 8
21 7
+505 
