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受欢迎的 Word Problems >

Find two consecutive integer whose sum is 45

解答

F in d tw o co n sec u t i v e in t e g er w h ose s u m i s 45

解答

The number : 5 or - 4 \frac{1}{2}

求解步骤

Represent the numbers with

x

:

First number : x

Consecutive number : x + 1

A.T.Q.:

(x + 1) (x + x + 1) = 45

解

(x + 1) (x + x + 1) = 45 : x = 4, x = - \frac{11}{2}

代入

x = 4 : 5

代入

x = - \frac{11}{2} : - \frac{9}{2}

将假分式转换为带分数:

\frac{9}{2} = 4 \frac{1}{2}

The number : 5 or - 4 \frac{1}{2}

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