解方程(x-7)-2(9-4(2-x))=22
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 4x+7=9x+22 2(x-2)-3(4x-1)=9(1-x)
解方程(x²-x+4)x-(x-1)(x²+2)=x+7
解方程: 2x^10=x^4+x^7
解方程(3x^2+9x+7)/(x+1)-(2x^2+4x-3)/(x-1)-(x^3+x+1)/(x^2-1)=0
解方程:x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6)
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
解方程(9x-7)/(3x-2)-(4x-5)/(2x-3)=1
9x+7/3x+2-4x+5/2x+3=1解方程