2x 9 4x x 12 July 8, 2019 16 32 64 128 2x 9 4x x 12 answer 2x 9 4x 3 5 x 12 12 x 3 )= 4 2x 9 )+ 4x 12 x 3 )= 4 2x 9 )+ 4x answer 12 x 3 )= 4 2x 9 )+ 4x how many solutions 2x 9