6 3 4 x 9 1 2 July 8, 2019 16 32 64 128 5 6 7 9 x 4 3 1 2 1 2 3 4 x 6 7 8 9 Ipad case 6 3 4 x 9 1 2 4 1 2 x 6 3 4 x 9 2 5 6 1 4 x 2 3 )= 9 3 8 Ipad 9 1 2 x 6 3 4 3 4 x 6 )- 1 4x 2 4 x 9 4 x 7 )- 6 3 2x 1 )+ 9 6 3/4 x 1 9/39 6 4/9 x =1
