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Phổ biến Word Problems >

The sum of a number and 21 times its reciprocal is 10 . Find the number(s).

Lời Giải

T h e s u m o f a n u mb er an d 21 t im es i t s rec i p roc a l i s 10 . F in d t h e n u mb er (s) .

Lời Giải

The number : 7 or 3

Các bước giải pháp

Represent the number with

x

A.T.Q.:

x + 21 \cdot \frac{1}{x} = 10

Giải

x, x + 21 \cdot \frac{1}{x} = 10 : x = 7, x = 3

The number : 7 or 3

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