Breuken verm. (reeks 2)

Hoofdmenu Eentje per keer  🖨

Vermenigvuldig de breuken

1. \(\frac{-10}{3} . \left(\frac{-7}{-6}\right)\)
2. \(\frac{3}{8} . \frac{5}{8}\)
3. \(\frac{-4}{-19} . \frac{8}{9}\)
4. \(\frac{6}{-19} . \left(\frac{6}{-5}\right)\)
5. \(\frac{-2}{9} . \left(\frac{4}{-5}\right)\)
6. \(\frac{2}{9} . \left(\frac{12}{-10}\right)\)
7. \(\frac{-10}{3} . \left(\frac{-4}{-2}\right)\)
8. \(\frac{8}{7} . \left(\frac{-12}{6}\right)\)
9. \(\frac{12}{19} . \left(\frac{11}{-11}\right)\)
10. \(\frac{11}{-9} . \left(\frac{9}{-7}\right)\)
11. \(\frac{-6}{-7} . \left(\frac{10}{-9}\right)\)
12. \(\frac{-7}{12} . \left(\frac{-5}{-12}\right)\)

---

Vermenigvuldig de breuken

Verbetersleutel

1. \(\frac{-10}{3} . \left(\frac{-7}{-6}\right)\\=-\frac{10.7}{3.6}\\=-\frac{70}{18}\\=-\frac{35}{9}\)
2. \(\frac{3}{8} . \frac{5}{8}\\=+\frac{3.5}{8.8}\\=\frac{15}{64}\)
3. \(\frac{-4}{-19} . \frac{8}{9}\\=+\frac{4.8}{19.9}\\=\frac{32}{171}\)
4. \(\frac{6}{-19} . \left(\frac{6}{-5}\right)\\=+\frac{6.6}{19.5}\\=\frac{36}{95}\)
5. \(\frac{-2}{9} . \left(\frac{4}{-5}\right)\\=+\frac{2.4}{9.5}\\=\frac{8}{45}\)
6. \(\frac{2}{9} . \left(\frac{12}{-10}\right)\\=-\frac{2}{9}.\frac{6}{5}\\=-\frac{2.6}{9.5}\\=-\frac{12}{45}\\=-\frac{4}{15}\)
7. \(\frac{-10}{3} . \left(\frac{-4}{-2}\right)\\=-\frac{10}{3}.\frac{2}{1}\\=-\frac{10.2}{3.1}\\=-\frac{20}{3}\)
8. \(\frac{8}{7} . \left(\frac{-12}{6}\right)\\=-\frac{8}{7}.\frac{2}{1}\\=-\frac{8.2}{7.1}\\=-\frac{16}{7}\)
9. \(\frac{12}{19} . \left(\frac{11}{-11}\right)\\=-\frac{12}{19}.\frac{1}{1}\\=-\frac{12.1}{19.1}\\=-\frac{12}{19}\)
10. \(\frac{11}{-9} . \left(\frac{9}{-7}\right)\\=+\frac{11.9}{9.7}\\=\frac{99}{63}\\=\frac{11}{7}\)
11. \(\frac{-6}{-7} . \left(\frac{10}{-9}\right)\\=-\frac{6.10}{7.9}\\=-\frac{60}{63}\\=-\frac{20}{21}\)
12. \(\frac{-7}{12} . \left(\frac{-5}{-12}\right)\\=-\frac{7.5}{12.12}\\=-\frac{35}{144}\)