3 5 x 10 ) 5 2 5 x 5 ) 4 July 8, 2019 16 32 64 128 3 5 x 10 )+ 5 2 5 x 5 )+ 4 3 x-5=x+3 5 x 5 x 5 x 5 x 5 5 x 5 x 5
