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受欢迎的代数 >

x/9 = 8/(2x)

解答

\frac{x}{9} = \frac{8}{2 x}

解答

x = 6, x = - 6

求解步骤

\frac{x}{9} = \frac{8}{2 x}

使用分式交叉相乘

x^{2} = 36

解

x^{2} = 36 : x = 6, x = - 6

x = 6, x = - 6

验证解

找到无定义的点（奇点）:

x = 0

将不在定义域的点与解相综合:

x = 6, x = - 6

作图

流行的例子

4/x =(18)/(5x)+2

\frac{4}{x} = \frac{18}{5 x} + 2

y/(y-4)-6= 4/(y-4)

\frac{y}{y - 4} - 6 = \frac{4}{y - 4}

1/(x-3)+5=(26)/(x-3)

\frac{1}{x - 3} + 5 = \frac{26}{x - 3}

2 x + 6 = \frac{- 5}{x}

4/(x+3)+2/(x-4)=1

\frac{4}{x + 3} + \frac{2}{x - 4} = 1