ГДЗ Математика 6 клас Істер — Вправа 246

Розв'язання

1) $\frac{3}{8} + \frac{2}{9} = \frac{27}{72} + \frac{16}{72} = \frac{43}{72};$

2) $\frac{1}{6} + \frac{2}{5} = \frac{5}{30} + \frac{12}{30} = \frac{17}{30};$

3) $\frac{2}{9} + \frac{11}{15} = \frac{10}{45} + \frac{33}{45} = \frac{43}{45};$

4) $\frac{7}{12} + \frac{2}{9} = \frac{21}{36} + \frac{8}{36} = \frac{29}{36};$

5) $\frac{13}{15} - \frac{1}{2} = \frac{26}{30} - \frac{15}{30} = \frac{11}{30};$

6) $\frac{9}{20} - \frac{13}{30} = \frac{27}{60} - \frac{26}{60} = \frac{1}{60};$

7) $\frac{11}{16} - \frac{7}{12} = \frac{33}{48} - \frac{28}{48} = \frac{5}{48};$

8) $\frac{21}{26} - \frac{8}{13} = \frac{21}{26} - \frac{16}{26} = \frac{5}{26}.$