X 7 12 2 1 3 July 8, 2019 16 32 64 128 2 7 12 x 4 1 3 6 7 12 x 2 1 3 7 12 2 3 x 1 10 2 7 12 x 4 1 3 as a fraction 2 x 7 )-( 1 x )= 12 3x 1 9 11 x 4 7 12 2 3 7 x 2 12 − 1 4 3x − 1 )= 0 - 12 x - 7 X-7 12=1 12