1.3X﹣0.44=0.6 30X÷2=360 3.6×5﹣2X=11.6
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
30X-2X=84 5.8X-X=60 6.6X-5X=8 4X-X=24 1.5X-X=1
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
2x+3x+4x+5x+x+6x+7x=100
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
x^2=(x+30)X(x-18)怎么解
5[x^2-x]=3[x^2+x]
5x+2=-8 x=30 3x=5x-14 x
6/x+1=x-5/x^2+x
X-5+8*X=7*X-2*X-1