1 7 8 x 2 1 4 July 8, 2019 16 32 64 128 1 7 8 x 2 3 4 4 1 2 x 1 4 x 7 8 grinding wheel 1 7 8 x 2 3 4 as a fraction 7 8 x 1 2 )=- 49 80 1 7 8 4 4 5 x 2 1 12 1 7 8 2 1 4 x 3 5 2 Square hole spacer 1 4 x 7 8 x 2 1 4 8 x 7 1 2 x 6 1 4 3 4 x 1 3 7 8 x 1 2 simplified 4 1 4 2 7 8 x 1 61 7 8 ≥ 1 4 x 1 2