3 5 3 7 x 5 6 July 8, 2019 16 32 64 128 3 5 x 2 7 x 5 6 3 5 7 12 x 5 6 2 3 5 3 x 7 10 x 5 6 5 x 7 = 35 ( 5 3 − 7 3 )⋅ 6 5 3 x-5=x+3
