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受欢迎的 Word Problems >

a number decreased by 21 is equal to the product of a number and-23

解答

a n u mb er d ecre a se d b y 21 i s e q u a l t o t h e p ro d u c t o f a n u mb er an d - 23

解答

The number : \frac{7}{8}

求解步骤

Represent the number with

x

A.T.Q.:

x - 21 = x (- 23)

求解

x, x - 21 = x (- 23) : x = \frac{7}{8}

The number : \frac{7}{8}

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