13 y 2 5 yx 8 x 2 July 8, 2019 16 32 64 128 13 - 5y = 8 - 2y 5/(x ^ 2 + xy) + 4/(y ^ 2 + xy) = 13/6 8/(x ^ 2 + xy) - 1/(y ^ 2 + xy) = 1 8 y - 13 = 12 y - 9
