1.2x-0.5x=6.

1.2x-0.5x=6. 0.8X-0.5*1.2X=10 （X+X)+(X-X)+(X*X)+(X/X)=100 0.5X+120+0.3X=X 4X+0.5X=13.5X x-30-0.2x=0.5x x-0.3x-0.5x=20 9x+0.5x+x= 0.5X=6. 4x一5/0.5—5x-0.8/0.2=1.2-x/0.1 x= X+0.5X=3 X-0.8X=8 求x:|x|-|x-4|=0.5x-1 65%X+X=6. 8x-5.5x=7.57.2x÷3.6=2 3x＋6x-8x=0.7 12x-2x-5x=4.512x-x=0 5x＋x=1.8 3.2x＋1.8x=64.8x-0.8x=6 6.3-0.3x=9.6 8.6x-8.5x=0.720x-2x=36 9x＋6x=4.5 18x-12x=5.42x-1.6x=3.6 18x＋3x=7×6 1.2x-0.5x=0.71.3x＋2.7x=1 4x-3.2x=6.4 0.8x＋3.2x＋3x=562.8x-2x=7.2 1.2x=x+20 1.2X-30=X 1.2x-x=0. x-1.2x=9.6