解方程:8x -4.5÷0.2=16 3(x+30)=6x+30 3-(5-2x)=x+2
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
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:8x -4.5÷0.2=16 3(x+30)=6x+30 3-(5-2x)=x+2
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8
解方程:(x-2)(x^2-6x-9)=x(x-5)(x-3)
解方程5x+2x+3x+8x+6x=140-x-3x
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7)
解方程:x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)