5 6x 8 )-( 2 3x 9 July 8, 2019 16 32 64 128 6x 5 )( 2 3x )= 16 2x 8 9x 2 3x 4 )+ 5 6x 7 )+ 8 9x 10 )= 123 5x+8 6 =3 9
