2 x 5 ) 3 x 7 )= 19 July 8, 2019 16 32 64 128 2 x 5 )+ 3 x 7 )= 19 7 x 3 )- 5 x 2 )+ 11 x 1 )= 19 19 1 2 x 7 2 3 x 7 1 5 5 x 7 = 35 2 x 2 5 3 x-5=x+3