Сверь числа и знаки с фото.
- Вычислите:
- \(\frac{25}{28}-\frac{2}{21}\);
- \(\frac{41}{54}-\frac{35}{72}\);
- \(\frac{20}{21}-\frac{3}{14}\);
- \(\frac{40}{143}+\frac{39}{110}\);
- \(\frac{43}{140}+\frac{41}{150}\);
- \(\frac{73}{80}-\frac{37}{100}\).
\(\frac{25}{28}-\frac{2}{21}=\frac{75-8}{84}=\frac{67}{84}\)
\(\frac{41}{54}-\frac{35}{72}=\frac{164-105}{216}=\frac{59}{216}\)
\(\frac{20}{21}-\frac{3}{14}=\frac{40-9}{42}=\frac{31}{42}\)
\(\frac{40}{143}+\frac{39}{110}=\frac{400+507}{1430}=\frac{907}{1430}\)
\(\frac{43}{140}+\frac{41}{150}=\frac{645+574}{2100}=\frac{1219}{2100}\)
\(\frac{73}{80}-\frac{37}{100}=\frac{365-148}{400}=\frac{217}{400}\)