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受欢迎的 Word Problems >

if the sum of a number and four is doubled,the result is nine less than the number

解答

i f t h e s u m o f a n u mb er an d f o u r i s d o u b l e d, t h e res u lt i s nin e l ess t han t h e n u mb er

解答

The number : - 17

求解步骤

Represent the number with

x

A.T.Q.:

(x + 4) \cdot 2 = x - 9

求解

x, (x + 4) \cdot 2 = x - 9 : x = - 17

The number : - 17

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