解方程:2x+9×25%x=1020
解方程:(x-2)(x^2-6x-9)=x(x-5)(x-3)
2、解方程.9X-5X=21.6 2.4X+4X=12.8
解方程:2x+19=x+25
解方程6*25^x=9^x+15^x
解方程:2x(x-9x)+16=0
9x^2+6x=5x解方程
解方程 5x+6x-9=2x
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)