Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{9}{7}-\frac{2}{9}\\=\frac{81}{63}-\frac{14}{63}\\=\frac{81-14}{63}\\=\frac{67}{63}\)
2. \(\frac{4}{3}-\frac{7}{11}\\=\frac{44}{33}-\frac{21}{33}\\=\frac{44-21}{33}\\=\frac{23}{33}\)
3. \(\frac{10}{7}-\frac{6}{5}\\=\frac{50}{35}-\frac{42}{35}\\=\frac{50-42}{35}\\=\frac{8}{35}\)
4. \(\frac{10}{9}-\frac{4}{9}\\=\frac{10-4}{9}\\=\frac{6}{9}\\=\frac{2}{3}\)
5. \(\frac{4}{7}-\frac{3}{8}\\=\frac{32}{56}-\frac{21}{56}\\=\frac{32-21}{56}\\=\frac{11}{56}\)
6. \(\frac{10}{11}-\frac{2}{3}\\=\frac{30}{33}-\frac{22}{33}\\=\frac{30-22}{33}\\=\frac{8}{33}\)
7. \(\frac{9}{7}-\frac{6}{5}\\=\frac{45}{35}-\frac{42}{35}\\=\frac{45-42}{35}\\=\frac{3}{35}\)
8. \(\frac{10}{11}-\frac{4}{9}\\=\frac{90}{99}-\frac{44}{99}\\=\frac{90-44}{99}\\=\frac{46}{99}\)
9. \(\frac{8}{3}-\frac{4}{5}\\=\frac{40}{15}-\frac{12}{15}\\=\frac{40-12}{15}\\=\frac{28}{15}\)
10. \(\frac{6}{5}-\frac{2}{9}\\=\frac{54}{45}-\frac{10}{45}\\=\frac{54-10}{45}\\=\frac{44}{45}\)
11. \(\frac{4}{5}-\frac{2}{9}\\=\frac{36}{45}-\frac{10}{45}\\=\frac{36-10}{45}\\=\frac{26}{45}\)
12. \(\frac{7}{3}-\frac{2}{3}\\=\frac{7-2}{3}\\=\frac{5}{3}\)