Question 1033535
y=3x-5
xy=50
x(3x-5)=50
3x^2-5x=50
3x^2-5x-50=0
(3x+10)(x-5)=0
x=-10/3, or 5
5 is the most sensible choice, thus:
5((3x5)-5)=5x10=50!!!!!!!
Your maths is correct.