75x-0.5x=6.25

75x-0.5x=6.25 （X+X)+(X-X)+(X*X)+(X/X)=100 x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4（x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1 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= x*x=75%x*(x+3)怎么解? X+0.5X=3 X-0.8X=8 求x:|x|-|x-4|=0.5x-1 (x+75)x=2500 2.2X=75+X, x*x*x*x*x=80000? x+0.5x=30 X=12.8+0.5X x-0.5x=20, 0.5X=X-9