Y 5 6 7 x 21 July 8, 2019 16 32 64 128 7) 6 7 x- 5 9 y=2 - 2 21 x- 1 9 y=6 6) 5 14 y-12= 4 21 y-7 5 6 7 x- 5 9 y=2 - 2 21 x- 1 9 y=6
