(3-1)/x = 1/2

解答

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

x = 4

求解步骤

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

使用分式交叉相乘

4 = x

交换两边

x = 4

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 = 4

x^{2} + (\frac{1}{x ^{2}}) = 27

\frac{( 4 x - 1 )}{( 2 x )} = 5

\frac{( x - 1 )}{2 - ( x + 1 ) \cdot 0.3} = 3

\frac{x}{( x ^{2} - 9 )} + \frac{4}{( x + 3 )} = \frac{3}{( x ^{2} - 9 )}

\frac{4 ( ( x + 1 ) ( 2 x + 5 ) - 2 x ^{2} - 5 )}{( x - 2 )} = 3