The sum of two consecutive integers is-78.Find the largest integer.

해법

T h e s u m o f tw o co n sec u t i v e in t e g ers i s - 78. F in d t h e l a r g es t in t e g er .

The number : - 38 \frac{1}{2}

솔루션 단계

Represent the numbers with

x

First number : x

Consecutive number : x + 1

A.T.Q.:

x + x + 1 = - 78

x + x + 1 = - 78

해결 :

x = - \frac{79}{2}

x + 1 = - \frac{79}{2} + 1 = - \frac{77}{2}

부적절한 분수를 혼합 숫자로 변환:

\frac{77}{2} = 38 \frac{1}{2}

The number : - 38 \frac{1}{2}