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Phổ biến Word Problems >

If three more than four times a number is twenty-one less than seven times the same number. What is the number?

Lời Giải

I f t h ree m ore t han f o u r t im es a n u mb er i s tw e n t y - o n e l ess t han se v e n t im es t h e s am e n u mb er . Wha t i s t h e n u mb er ?

Lời Giải

The number : 8

Các bước giải pháp

Represent the number with

x

A.T.Q.:

3 + 4 x = 7 x - 21

Giải

x, 3 + 4 x = 7 x - 21 : x = 8

The number : 8

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