Question

вычислите: 5 1/3:6 25+(12:3 3/5-2/3)умножить 23+7 2/5 г) 21 2/59-2/5

Answer 1

$5ttdisplaystylefrac{1}{3}:6frac{2}{5}+(12:3frac{3}{5}-frac{2}{3})*frac{2}{3}+7frac{2}{5}=10frac{1}{90}$

$1)12:3ttdisplaystylefrac{3}{5}=12:frac{18}{5}=frac{12*5}{80}=frac{10}{3}$

$2)ttdisplaystylefrac{10}{3}-frac{2}{3}=frac{8}{3}$

$3)5ttdisplaystylefrac{1}{3}:6frac{2}{5}=frac{16}{3}:frac{32}{5}=frac{16}{3}*frac{5}{32}=frac{5}{6}$

$4)ttdisplaystylefrac{8}{3}*frac{2}{3}=frac{16}{9}$

$5)ttdisplaystylefrac{5}{6}+frac{16}{9}=frac{15+32}{18}=frac{47}{18}=2frac{11}{18}$

$6)2ttdisplaystylefrac{11}{18}+7frac{2}{5}=2frac{55}{90}+7frac{36}{90}=9frac{91}{90}=10frac{1}{90}$

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$21ttdisplaystylefrac{2}{59}-frac{2}{5}=21frac{10}{295}-frac{118}{295}=20frac{305}{295}-frac{118}{295}=20frac{187}{295}$