解方程X-0.5X=15 X-0.8X=10 2.5X+2X=9

解方程X-0.5X=15 X-0.8X=10 2.5X+2X=9 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 1/x(x+1)+1/(x+1)(x+2)+...+1/(x+9)(x+10)=1/(x+10),解方程 解方程：(x-2)(x^2-6x-9)=x(x-5)(x-3) ⒈ 解方程 (X+7)/(X+6)+(X+9)/(X+8)=(X+10)/(X+9)+(X+6)/(X+5) 解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8) 解方程】(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程：（x-8）/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程（x-2）X（x的平方-6x-9）=x(x-5)X(x-3) 解方程：x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 解方程 x*x*x + 2*x -19 =0