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受欢迎的 Word Problems >

Directions: Set up and solve an equation for each The product of 7 and a number, increased by 3 is equal to twice the number, subtracted from 39. Find the number.

解答

D i rec t i o n s : S e t u p an d so l v e an e q u a t i o n f or e a c h T h e p ro d u c t o f 7 an d a n u mb er, in cre a se d b y 3 i s e q u a l t o tw i ce t h e n u mb er, s u b t r a c t e d f ro m 39. F in d t h e n u mb er .

解答

The number : 4

求解步骤

Represent the number with

x

A.T.Q.:

7 x + 3 = 39 - 2 x

求解

x, 7 x + 3 = 39 - 2 x : x = 4

The number : 4

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