帮我解几道方程!3x+3.3=7.92 3/4x-5%x=17.5 2.5*8-2x=12 13x-9x=0.3*9
帮我解几道方程!3x+3.3=7.92 3/4x-5%x=17.5 2.5*8-2x=12 13x-9x=0.3*9
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)
解分式方程 x-7/x-9+x-3/x-5=x-4/x-6+x-6/x-8
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
帮我解下列方程:13.2x+9x=33.3 8x-3x=105 5.4x+3x=12.8 x-0.36x=16
方程(x+1)(x+2)(x+3)(x+4)(x+5)(x+6)(x+7)(x^2+8x+9)+64=0
解方程:(x-2)(x^2-6x-9)=x(x-5)(x-3)
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)