30+25%x=1/2x
x-78%x=8.8 (1+25%)x=46 25%x/2=5 x+30%x=52 6%x-0.8%x=10.4 7.3
x/2+x/6+x/12+x/20+x/30+x/42=1
30X-2X=84 5.8X-X=60 6.6X-5X=8 4X-X=24 1.5X-X=1
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
解方程 40%x+2=12 x+25%x=10 x-30%x=1.4 15x-60=240 x+1
x/x平方-x+2=2x/x+1
计算:(x+1)x=7 (x-1)(x+2)=30 (3-x)(3-x)+x=9
解方程:(2x+5)(4x*x-10x+25)=8x(x*x+1)
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
X^2+(X+1)^2=25 X=?