3=...

malina022 @malina022

August 2022 1 0 Report

выполните действия: 78 33/38+5/38-7 29/30-42-28 1/3+1 7/15+4 1/3=

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абл $78 \frac{33}{38} + \frac{5}{38} - 7 \frac{29}{30} - 42 - 28 \frac{1}{3} + 1 \frac{7}{15} + 4 \frac{1}{3} 
 \\ 
 \\ 78 \frac{33}{38} + \frac{5}{38} = 78 \frac{33+5}{38} = 78 \frac{38}{38} = 79
 \\ 
 \\ 79 - 7 \frac{29}{30} = 72 \frac{29}{30} 
 \\ 
 \\ 72 \frac{29}{30} - 42 = 30 \frac{29}{30} 
 \\ 
 \\ 30 \frac{29}{30} - 28 \frac{1}{3} = 2 \frac{29-10}{30} = 2 \frac{19}{30} 
 \\ 
 \\ 2 \frac{19}{30} + 1 \frac{7}{15} = 3 \frac{19+14}{30} = 3 \frac{33}{30} = 4 \frac{1}{10}$
$4 \frac{1}{10} + 4 \frac{1}{3} = 8 \frac{3+10}{30} = 8 \frac{1+1}{1} = 8 \frac{2}{1} = 10$

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