3.5 X—1.5 X=10.8 2x=10.8 x=5.4 2.36 X+2.64 X=18 5x=18 x=3.6 X—0.75 x=12 0.25x=12 x=48 2.8 X+ X=7.6 3.8x=7.6 x=2