algebra
posted by 3=36x3y .
Determine X and Y

36x  3y = 3
reduce to
12x  y = 3
or
y = 12x 3
There are an infinite number of solutions
pick any x you feel like, then evaluate the corresponding y
e.g.
x = 1
y = 12(1)3 = 123 = 9
x = 3.56
y = 12(3.56) 3 = 45.72
etc.
To have the instruction:
"Determine X and Y" is simply much too vague.