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2. Wochenlektion
Berechnen Sie:
$$\left(\frac{9}{5}-\frac{7}{3}\right)\cdot-\frac{45}{32}$$
$$\left(\frac{7}{2}-\frac{9}{4}\right)\cdot\frac{12}{25}$$
$$\left(\frac{4}{5}+\frac{3}{2}\right)\cdot\frac{4}{23}$$
$$\left(\frac{27}{15}-\frac{35}{15}\right)\cdot-\frac{45}{32}=-\frac{8}{15}\cdot-\frac{45}{32}=\frac{3}{4}$$
$$\left(\frac{14}{4}-\frac{9}{4}\right)\cdot\frac{12}{25}=\frac{5}{4}\cdot\frac{12}{25}=\frac{3}{5}$$
$$\left(\frac{8}{10}+\frac{15}{10}\right)\cdot\frac{4}{23}=\frac{23}{10}\cdot\frac{4}{23}=\frac{2}{5}$$