5 7 3 7x 1 July 8, 2019 16 32 64 128 7 x 3 )- 5 7x 1 3 7x 19 8 7 5 3 7x 7 5 )( 6 9 10x )= 0 3 2x 5 )- 2 4x 7 )= 7x 17 5 x 7 = 35