Apskaičiuokite
1. $$\frac{7}{15}-\frac{4}{15}$$
Sprendimas.
$$\frac{7}{15}-\frac{4}{15} = \frac{3}{15} = \frac{1}{5}$$
Atsakymas: $$\frac{1}{5}$$
2. $$\frac{5}{28}:(\frac{15}{7})$$
Sprendimas.
$$\frac{5}{28}:(\frac{15}{7}) = \frac{5\cdot 7}{28\cdot 15} = \frac{7}{3\cdot 28} = \frac{1}{3\cdot 4} = \frac{1}{12}$$...