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受欢迎的 Word Problems >

Twice the 差集 of a number and 5 is equal to 9.

解答

Tw i ce t h e d i ff ere n ce o f a n u mb er an d 5 i s e q u a l t o 9.

解答

The number : 9 \frac{1}{2}

求解步骤

Represent the number with

x

A.T.Q.:

2 (x - 5) = 9

求解

x, 2 (x - 5) = 9 : x = \frac{19}{2}

将假分式转换为带分数:

\frac{19}{2} = 9 \frac{1}{2}

The number : 9 \frac{1}{2}

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