Question

5x-6y=12

Answer 1

The only equation posted has two unknowns.

Either one other equation is missing from the post, or you can say that
6y=5x-12
or
y=(5/6)x - 2
and there is an infinite number of solution sets, when x=0, y=-2, when x=1, y=-7/6, when x=2, y=-1/3, .....