解方程.4/5X=3/10,X*2/3*3/5=20,X*3/5=20*3/4,X*2/7=10/21/2/3
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
方程(x-1/x-2)-(x-3/x-4)=(x-2/x-3)-(x-4/x-5)解为x=7/2,(1/x-7)-(1/
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
7x(x-6)+3x=4x(2x+5)怎么解这个方程
(x-3)(x+8)=(x+4)(x-7)+2(x+5)解方程,
解方程:2(X-3)(X+5)=X平方+(X+2)(X-2)+(X+7)
解方程:11(6-x)/3(x-4)=10(5-x)/3(x-4)-5(6-x)/x-2
解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7)