8x-3x=105 5x=105 x=21 x-0.36x=16 0.64x=16 x=25 13.2x+9x=33.3 22.2x=33.3 x=1.5 2x+1.5x=17.5 3.5x=17.5 x=5 2x-x=41.6 x=41.6
