Предмет: Математика, автор: Regina2281

Пж помогите с 52
Срочно

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Автор ответа: firsovazenya

ну наднадеюсь поймёшь почерк)

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Автор ответа: NNNLLL54

$1); ; 3 frac{1}{16}-frac{1}{8}=(2+frac{16}{16}+frac{1}{16})- frac{2}{16}=(2+frac{17}{16})-frac{2}{16}=2 frac{15}{16}$

$2); ; 7frac{9}{20}-5frac{17}{30}=7frac{27}{60}-5frac{34}{60}= 6frac{87}{60}-5 frac{34}{60}=1 frac{53}{60}\\3); ; 4frac{2}{7}-1frac{4}{9}=(3+frac{7}{7}+frac{2}{7})-1frac{4}{9}=3frac{9}{7}-1frac{4}{9}=3frac{81}{63}-1frac{28}{63}=2frac{53}{63}$

$4); ; 8frac{5}{36}-1frac{43}{108}=(7+frac{36}{36}+frac{5}{36})-1frac{43}{108}=7frac{41}{36}-1 frac{43}{108}=[, 108=3cdot 36]=\\=7frac{123}{108}-1frac{43}{108}=6frac{80}{108}=6frac{20}{27}$

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