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受欢迎的 Word Problems >

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.

解答

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 .

解答

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

求解步骤

Represent the number with

x

A.T.Q.:

7 (x + 4) = 3

求解

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

将假分式转换为带分数:

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

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

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