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受欢迎的代数 >

(-2-8/13)/(x+2)=1

解答

\frac{- 2 - \frac{8}{13}}{x + 2} = 1

解答

x = - \frac{60}{13}

+1

十进制

x = - 4.61538 \dots

求解步骤

\frac{- 2 - \frac{8}{13}}{x + 2} = 1

化简

\frac{- 2 - \frac{8}{13}}{x + 2} : - \frac{34}{13 ( x + 2 )}

- \frac{34}{13 ( x + 2 )} = 1

在两边乘以

13 (x + 2)

- 34 = 13 (x + 2)

交换两边

13 (x + 2) = - 34

两边除以

13

x + 2 = - \frac{34}{13}

将

2

到右边

x = - \frac{60}{13}

验证解

找到无定义的点（奇点）:

x = - 2

将不在定义域的点与解相综合:

x = - \frac{60}{13}

作图

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