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Populaire Word Problems >

I thought of a number. Seven times the number decreased by 13 equals 5 times the number increased by 5. What was my number?

Solution

I t h o ug h t o f a n u mb er . S e v e n t im es t h e n u mb er d ecre a se d b y 13 e q u a l s 5 t im es t h e n u mb er in cre a se d b y 5. Wha t w a s m y n u mb er ?

Solution

The number : 9

étapes des solutions

Represent the number with

x

A.T.Q.:

7 x - 13 = 5 x + 5

Solutionner pour

x, 7 x - 13 = 5 x + 5 : x = 9

The number : 9

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