jolee89 jolee89

12-09-2018
Mathematics

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three times the difference of a number and seven is one less than twice the number. find the number

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TheMeThatMees TheMeThatMees

12-09-2018

3(x-7) = 2x -1

3x -21 = 2x -1
x -21 = -1
x = 20

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