1 7 x 21 July 8, 2019 16 32 64 128 1 7 x 210 1 7 x 21 )=- 6 1 7 x 21 4 7 1 x )+ 21 14 1 3 7 x 21 1 7 5 21 x 7 3 1 7 x 10 21 1 5 7 x 21 1 16 x 7 21 1 2 x 7 x 21 7 1 x 2 21 as a fraction 1 7 7x 21 )= 8x 7x 24 1 7 9 x )+ 6x 21 1 2 x 22 7 x 21
