Translate the sentence into an equation.:The sum of 4 times a number and 3 is 9: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 . : T h e s u m o f 4 t im es a n u mb er an d 3 i s 9 : 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 : 1 \frac{1}{2}

솔루션 단계

Represent the number with

x

A.T.Q.:

4 x + 3 = 9

x

해결 대상

, 4 x + 3 = 9 : x = \frac{3}{2}

부적절한 분수를 혼합 숫자로 변환:

\frac{3}{2} = 1 \frac{1}{2}

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