TonitaMcgehee TonitaMcgehee

22-07-2014
Mathematics

contestada

twice a number is equal to seven more than four times the number

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konrad509 konrad509

22-07-2014

[tex]2x=4x+7\\ 2x=-7\\ x=-\frac{7}{2}[/tex]

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Аноним Аноним

22-07-2014

[tex]x-the\ number\\\\2x=4x+7\ \ \ \ |-4x\\\\-2x=7\ \ \ \ \ |:(-2)\\\\x=-\frac{7}{2}\\\\x=-3.5[/tex]

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