60(x+1)=90(x-1)
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60(x+1)=90(x-1)60(x+1)=90(x-1)60(x+1)=90(x-1)60(x+1)=90(x-1)则2(x+1)=3(x-1)则2x+2=3x-3解得x=560x+60=90x-
60(x+1)=90(x-1)
60(x+1)=90(x-1)
60(x+1)=90(x-1)
60(x+1)=90(x-1)
则2(x+1)=3(x-1)
则2x+2=3x-3
解得x=5
60x+60=90x-90
90x-60x=60+90
30x=150
x=5
x(x-1)(x+1)=60
x/45+x/90-x/60=1 解方程
X/60-X/90=1,求X的值?
60(x+1)=90(x-1)
60(x+1)=90(x-1)
60-1/5x+90=x
X(X-1)=X
50x(x-1)+60x(x-4)=5100
X(X-1)=90
X/X+1=60%- -
x>=1,x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
解方程. 1、x+21%x=36.3 2、x-29%=213 3、60%x+25%x=10.2 4、90%x-18%x=54
x*x*x*x+2008x*x+2007x+2008(提示：x*x*x-1=（x-1）*（x*x+x+1））
x/x平方-x+2=2x/x+1
(X+1)X(X+2)X(X+3)=504
60%x+90%（300-x)=300*70%和x-2[x-3(x-1）]=8怎么做