Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{9}{5}-\frac{10}{9}\\=\frac{81}{45}-\frac{50}{45}\\=\frac{81-50}{45}\\=\frac{31}{45}\)
2. \(\frac{7}{2}-\frac{7}{11}\\=\frac{77}{22}-\frac{14}{22}\\=\frac{77-14}{22}\\=\frac{63}{22}\)
3. \(\frac{5}{8}-\frac{3}{10}\\=\frac{25}{40}-\frac{12}{40}\\=\frac{25-12}{40}\\=\frac{13}{40}\)
4. \(\frac{8}{3}-\frac{3}{2}\\=\frac{16}{6}-\frac{9}{6}\\=\frac{16-9}{6}\\=\frac{7}{6}\)
5. \(\frac{4}{3}-\frac{9}{11}\\=\frac{44}{33}-\frac{27}{33}\\=\frac{44-27}{33}\\=\frac{17}{33}\)
6. \(\frac{7}{2}-\frac{9}{5}\\=\frac{35}{10}-\frac{18}{10}\\=\frac{35-18}{10}\\=\frac{17}{10}\)
7. \(\frac{8}{3}-\frac{6}{7}\\=\frac{56}{21}-\frac{18}{21}\\=\frac{56-18}{21}\\=\frac{38}{21}\)
8. \(\frac{3}{7}-\frac{2}{11}\\=\frac{33}{77}-\frac{14}{77}\\=\frac{33-14}{77}\\=\frac{19}{77}\)
9. \(\frac{7}{8}-\frac{4}{5}\\=\frac{35}{40}-\frac{32}{40}\\=\frac{35-32}{40}\\=\frac{3}{40}\)
10. \(\frac{8}{11}-\frac{4}{11}\\=\frac{8-4}{11}\\=\frac{4}{11}\)
11. \(\frac{7}{6}-\frac{4}{7}\\=\frac{49}{42}-\frac{24}{42}\\=\frac{49-24}{42}\\=\frac{25}{42}\)
12. \(\frac{10}{11}-\frac{4}{5}\\=\frac{50}{55}-\frac{44}{55}\\=\frac{50-44}{55}\\=\frac{6}{55}\)