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受欢迎的代数 >

2/(3x)-5=x

解答

\frac{2}{3 x} - 5 = x

解答

x = \frac{- 15 + 249}{6}, x = \frac{- 15 - 249}{6}

+1

十进制

x = 0.12995 \dots, x = - 5.12995 \dots

求解步骤

\frac{2}{3 x} - 5 = x

在两边乘以

3 x

2 - 15 x = 3 x^{2}

解

2 - 15 x = 3 x^{2} : x = \frac{- 15 + 249}{6}, x = \frac{- 15 - 249}{6}

x = \frac{- 15 + 249}{6}, x = \frac{- 15 - 249}{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 = \frac{- 15 + 249}{6}, x = \frac{- 15 - 249}{6}

作图

流行的例子

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