3 (- 6 )(- 7 18 July 8, 2019 16 32 64 128 3 6 (- 1 7 18 3 divided by 18 6 7 5 6 7 18 x 3 16 3 x 7 )+ 6 18 3 6 18 4 7 3 7 3 7x5 6 7 18x3 7 3 2x 8 )- 6 x 7 )= 18
