решите пжпжпжпжпжпж 20б. Created by marxim111112018. matematika-ru

Ответ:Пошаговое объяснение:1 задание1) 2)3)4)Ответ:270,42 задание1)2)98-3)===3 задание1)

решите пжпжпжпжпжпж 20б...

marxim111112018 @marxim111112018

December 2021 1 2 Report

решите пжпжпжпжпжпж
20б

Answers & Comments

nikakichatova

Ответ:

Пошаговое объяснение:

1 задание

1) $3\frac{1}{2} -2\frac{2}{3} =\frac{7}{2} -\frac{8}{3} =\frac{21}{6} -\frac{16}{6} =\frac{5}{6}$

2) $\frac{5}{6} +5\frac{5}{6} =\frac{5}{6} +\frac{35}{6} =\frac{40}{6} =\frac{20}{3}$

3) $\frac{20}{3}+4\frac{3}{5}=\frac{20}{3} +\frac{23}{5} =\frac{100}{15} +\frac{69}{15} =\frac{169}{15}$

4) $\frac{169}{15}*24=270,4$

Ответ:270,4

2 задание

1) $5\frac{3}{8}+18\frac{1}{2} =\frac{48}{8}+\frac{37}{2} =\frac{96}{16}+\frac{296}{16} =\frac{392}{4} =98$

2)98- $7\frac{5}{21}=98-\frac{173}{24}=\frac{2352}{24}-\frac{173}{24}=\frac{2179}{24}$

3) $\frac{2179}{24}:16\frac{2}{3}$ = $\frac{2179}{24} *\frac{3}{50}$ = $\frac{2179}{400}$ = $5\frac{179}{400}$

3 задание

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