|(x-1)/4 |= 1/(4-x)

解答

\frac{x - 1}{4} = \frac{1}{4 - x}

x = 0

求解步骤

\frac{x - 1}{4} = \frac{1}{4 - x}

使用分式交叉相乘

∣ x - 1 ∣ (4 - x) = 4

解

∣ x - 1 ∣ (4 - x) = 4 : x = 0

x = 0

验证解

找到无定义的点（奇点）:

x = 4

将不在定义域的点与解相综合:

x = 0

\frac{x}{2 ^{2 x + 3}} = 8^{5 + x}

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

7 = \frac{31}{7 + 4 g}

\frac{3 - x}{( x - 4 )} = \frac{4}{( 4 - x )}

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