Related Post: 3 X X 21 X 3 X 210 3 X 21 X 4 3(x+2)-2x-1)=7 3 X 5 )= X 21 2 3 X )+ X 21 3 X 2 1 )( X Y 2 3 X 2 1 X 0 3 X 7 X 21 3 X 2 1 X 5