1)8 целых1\2 минус 3 целых4\15 минус 1 целая 7\30=.... 2)(13-8 целых5\12)+(17цел...

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1)8 целых1\2 минус 3 целых4\15 минус 1 целая 7\30=....

2)(13-8 целых5\12)+(17целых 1\2-16целых 1\5)=....

3)(63 целых 2\3+3 целых\8)-(13-10 целых 5\9)=...

примеры по действиям спасибо)

pkv1979 1. $8 \frac{1}{2}-3 \frac{4}{15}-1 = 4\frac{7}{30}$
$1) 8 \frac{1}{2}-3 \frac{4}{15}=8 \frac{15}{30} -3 \frac{8}{30}=5 \frac{7}{30}$
$2) 5 \frac{7}{30}-1=6 \frac{7}{30}$
2. $(13-8 \frac{5}{12})+(17 \frac{1}{2}-16 \frac{1}{5})=5 \frac{53}{60}$
$1) 13-8 \frac{5}{12}=12 \frac{12}{12}-8 \frac{8}{12}=4 \frac{7}{12}$
$2) 17 \frac{1}{2} -16 \frac{1}{5}=17 \frac{5}{10}-16 \frac{2}{10}=1 \frac{3}{10}$
$3) 4 \frac{7}{12}+1 \frac{3}{10}=4 \frac{35}{60}+1 \frac{18}{60}=5 \frac{53}{60}$
3. $(63 \frac{2}{3}+3 \frac{1}{8})-(13-10 \frac{5}{9})=64 \frac{25}{72}$
$1) 63 \frac{2}{3}+3 \frac{1}{8}=63 \frac{16}{24}+3 \frac{3}{24}=66 \frac{19}{24}$
$2) 13-10 \frac{5}{9}=12 \frac{9}{9}-10 \frac{5}{9}=2 \frac{4}{9}$
$3) 66 \frac{19}{24}-2 \frac{4}{9}=66 \frac{57}{72}-2 \frac{32}{72}=64 \frac{25}{72}$

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MilkaGirls 3 целых 1\8

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