x*x-x=90怎么解

x*x-x=90怎么解 x-10=90%x怎么解 60x=90x 怎么解 90-x=5x怎么解 X(X-1)=90怎么解 90/(x/10)*x/6+90=x怎么解 (90-x)(40%-1.6%x)=12怎么解x x(x-1)=90中x怎么解. x+4x=x+90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 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