Задача Задача №3803255
А
А
Сверь числа и знаки с фото.
- Найдите значение выражения:
- \(\frac{1}{5}+\frac{1}{9}+\frac{1}{3}\);
- \(\frac{1}{2}+\frac{3}{5}-\frac{2}{3}\);
- \(\frac{5}{6}+\frac{3}{8}-\frac{1}{4}\);
- \(\frac{5}{9}+\frac{1}{6}+\frac{3}{4}\);
- \(\frac{1}{3}+\frac{4}{9}+\frac{5}{6}\);
- \(\frac{1}{4}+\frac{1}{5}-\frac{3}{10}\).
- \(\frac{1}{5}+\frac{1}{9}+\frac{1}{3}=\frac{9+5+15}{45}=\frac{29}{45}\)
- \(\frac{1}{2}+\frac{3}{5}-\frac{2}{3}=\frac{15+18-20}{30}=\frac{13}{30}\)
- \(\frac{5}{6}+\frac{3}{8}-\frac{1}{4}=\frac{20+9-6}{24}=\frac{23}{24}\)
- \(\frac{5}{9}+\frac{1}{6}+\frac{3}{4}=\frac{20+6+27}{36}=\frac{53}{36}=1\frac{17}{36}\)
- \(\frac{1}{3}+\frac{4}{9}+\frac{5}{6}=\frac{6+8+15}{18}=\frac{29}{18}=1\frac{11}{18}\)
- \(\frac{1}{4}+\frac{1}{5}-\frac{3}{10}=\frac{5+4-6}{20}=\frac{3}{20}\)