[tex](2 \frac{7}{12}-2 \frac{17}{36} )*2,7-0,4 [/tex]. Created by qyas. algebra-ru

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[tex](2 \frac{7}{12}-2 \frac{17}{36} )*2,7-0,4 [/tex]

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nafanya2014

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$2 \frac{7}{12}= \frac{31}{12}= \frac{93}{36} , \\ 2 \frac{17}{36}= \frac{89}{36} , \\ 
1)( \frac{93}{36}- \frac{89}{36} )= \frac{4}{36}= \frac{1}{9}, \\ 2) \frac{1}{9}\cdot 2,7= \frac{1}{9}\cdot \frac{27}{10}= \frac{3}{10}=0,3, \\ 3)0,3-0,4=-0,1$

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nafanya2014 Замечательно!

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