x+0.1x+0.01x怎么解

x+0.1x+0.01x怎么解 x-0.1x=12怎么解 x-(0.1x+20)=28-0.7x怎么解 0.1X=X-30-(X-30)*0.7 怎么解 (X+2)x(0.8-0.1)=0.8x怎么解 x*x-x=90怎么解 -3x>x怎么解? x^2=(x+30)X(x-18)怎么解 x 5x=21.6-x-5x怎么解 (x+12)*(x+12)=x*x+360怎么解 (26*3x-10x)/(3x+x)怎么解 x-(30-x)=(30-x)-x/3,怎么解 x*x=(x+10)*(x-6)怎么解 x(x+x)=48 求x 怎么解 (x+x+23+x+50)=3x 怎么解 x*x=75%x*(x+3)怎么解? (168+X)/(288+X)=(120-X)/X怎么解 x*x+2*x+1=36,x怎么解,