Translate the sentence into an equation.Seven times the sum of a number and 4 equals 3. Use the variable x for the unknown number.

해법

T r an s l a t e t h e se n t e n ce in t o an e q u a t i o n . S e v e n t im es t h e s u m o f a n u mb er an d 4 e q u a l s 3. U se t h e v a r iab l e x f or t h e u nkn o w n n u mb er .

The number : - 3 \frac{4}{7}

솔루션 단계

Represent the number with

x

A.T.Q.:

7 (x + 4) = 3

x

해결 대상

, 7 (x + 4) = 3 : x = - \frac{25}{7}

부적절한 분수를 혼합 숫자로 변환:

\frac{25}{7} = 3 \frac{4}{7}

The number : - 3 \frac{4}{7}