1.8. One way to figure this out is to divide 3 by 5 (the denominator) which is equal to 0.6, then multiplying that by 3 (the numerator) which would be 1.8.
(x/y) = 7/3, (x^2/y^2)=49/9, multiply by 3 above and multiply 2 below, 3x^2/2y^2=147/18. Next apply C&D and you will get (3x^2+2y^2)/(3x^2-2y^2)=(147+18)/(147-18)=165/129=55/43
