Контрольные задания
Вопрос:Фото задания: Вычислите: 5/8 + 5/6; 3/20 − 1/50; 8/51 + 8/17; 1/3 − 1/6; 0,35 − 1/20.Фото задания

Ответ:

  1. \(\frac{5}{8}+\frac{5}{6}=\frac{15}{24}+\frac{20}{24}=\frac{35}{24}=1\frac{11}{24}\)
  2. \(\frac{3}{20}-\frac{1}{50}=\frac{15}{100}-\frac{2}{100}=\frac{13}{100}\)
  3. \(\frac{8}{51}+\frac{8}{17}=\frac{8}{51}+\frac{24}{51}=\frac{32}{51}\)
  4. \(\frac{1}{3}-\frac{1}{6}=\frac{2}{6}-\frac{1}{6}=\frac{1}{6}\)
  5. \(0{,}35-\frac{1}{20}=0{,}35-0{,}05=0{,}30=0{,}3\)