Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{9}{7}-\frac{2}{3}\\=\frac{27}{21}-\frac{14}{21}\\=\frac{27-14}{21}\\=\frac{13}{21}\)
2. \(\frac{9}{4}-\frac{10}{7}\\=\frac{63}{28}-\frac{40}{28}\\=\frac{63-40}{28}\\=\frac{23}{28}\)
3. \(\frac{8}{5}-\frac{9}{7}\\=\frac{56}{35}-\frac{45}{35}\\=\frac{56-45}{35}\\=\frac{11}{35}\)
4. \(\frac{7}{2}-\frac{9}{4}\\=\frac{14}{4}-\frac{9}{4}\\=\frac{14-9}{4}\\=\frac{5}{4}\)
5. \(\frac{9}{2}-\frac{4}{3}\\=\frac{27}{6}-\frac{8}{6}\\=\frac{27-8}{6}\\=\frac{19}{6}\)
6. \(\frac{8}{5}-\frac{8}{11}\\=\frac{88}{55}-\frac{40}{55}\\=\frac{88-40}{55}\\=\frac{48}{55}\)
7. \(\frac{10}{3}-\frac{3}{10}\\=\frac{100}{30}-\frac{9}{30}\\=\frac{100-9}{30}\\=\frac{91}{30}\)
8. \(\frac{5}{6}-\frac{3}{7}\\=\frac{35}{42}-\frac{18}{42}\\=\frac{35-18}{42}\\=\frac{17}{42}\)
9. \(\frac{4}{3}-\frac{9}{8}\\=\frac{32}{24}-\frac{27}{24}\\=\frac{32-27}{24}\\=\frac{5}{24}\)
10. \(\frac{10}{9}-\frac{3}{10}\\=\frac{100}{90}-\frac{27}{90}\\=\frac{100-27}{90}\\=\frac{73}{90}\)
11. \(\frac{4}{9}-\frac{3}{11}\\=\frac{44}{99}-\frac{27}{99}\\=\frac{44-27}{99}\\=\frac{17}{99}\)
12. \(\frac{9}{7}-\frac{3}{5}\\=\frac{45}{35}-\frac{21}{35}\\=\frac{45-21}{35}\\=\frac{24}{35}\)