Matthew S. answered 03/04/20
PhD in Mathematics with extensive experience teaching Linear Algebra
Where you have 1/2x, does that mean x/2? Or does it mean the reciprocal of 2x?
Similarly for y: y/9 or the reciprocal of 9y?
1/2x + 1/1 = 1y = 15/2 doesn't make much sense to me. Are you sure you copied the problem correctly?