21x 6 y 4 7x 7 y 5 July 8, 2019 16 32 64 128 Frac 7x^ 7 y^ 5 21x^ 6y^ 4 7) 6 7 x- 5 9 y=2 - 2 21 x- 1 9 y=6 6xy - 4y + 6 - 9x 21 x 7 5
