sheilaaughtman sheilaaughtman

06-06-2014
Mathematics

contestada

the difference of four times a number and seven is thirteen

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iloveonedirection iloveonedirection

06-06-2014

4x - 7 = 13
4x = 20
x = 5

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Аноним Аноним

06-06-2014

I believe the answer is either 5 or -1.5

4n - 7 = 13
7 - 4n = 13

4(5) - 7 = 13
7 - 4(-1.5) = 13

4(5) - 7 = 13

Answer Link

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