angelina2 angelina2

19-02-2015
Mathematics

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is -20/5 equivalent

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Аноним Аноним

19-02-2015

[tex]-\frac{20}{5}\\\\=-\frac{20:5}{5:5}=\fbox{-4}\\\\=-\frac{20\cdot2}{5\cdot2}=\boxed{-\frac{40}{10}}\\\\=-\frac{20\cdot3}{5\cdot3}=\boxed{-\frac{60}{15}}\\\vdots[/tex]

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