x-25%x=4.2 2x+30%x=9.2 (1-60%)x=0.32

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/31 12:44:08

x-25%x=4.2 2x+30%x=9.2 (1-60%)x=0.32
x-25%x=4.2 2x+30%x=9.2 (1-60%)x=0.32

x(1 - 25%) = 4.2
75%x = 4.2
x = 4.2 ÷ 75%
x = 5.6
x(2 + 30%) = 9.2
2.3x = 9.2
x = 9.2 ÷ 2.3
x = 4
40%x = 0.32
x = 0.32 ÷ 40%
x = 0.8

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 （X+X)+(X-X)+(X*X)+(X/X)=100 x/x平方-x+2=2x/x+1 x-60%x-25%x=25%x-30 x/2+x/6+x/12+x/20+x/30+x/42=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) 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002 f(x)=x/(x^2+1) y=(x^2+x)/(x+1)