6 x 3 y 21 7 x 4 y 2 July 8, 2019 16 32 64 128 6xy - 4y + 6 - 9x 3x + 2y = 6 6 7 x- 5 9 y=2 - 2 21 x- 1 9 y=6 7) 6 7 x- 5 9 y=2 - 2 21 x- 1 9 y=6
