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人気のある Word Problems >

The sum of a number times 9 and 25 is at least 21.

解

T h e s u m o f a n u mb er t im es 9 an d 25 i s a t l e a s t 21.

解

x \geq - \frac{4}{9}

解答ステップ

Represent the number with

x

A.T.Q.:

x \cdot 9 + 25 \geq 21

x

を解く

x \cdot 9 + 25 \geq 21 : x \geq - \frac{4}{9}

x \geq - \frac{4}{9}

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