Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{8}{5}-\frac{6}{7}\\=\frac{56}{35}-\frac{30}{35}\\=\frac{56-30}{35}\\=\frac{26}{35}\)
2. \(\frac{5}{3}-\frac{6}{11}\\=\frac{55}{33}-\frac{18}{33}\\=\frac{55-18}{33}\\=\frac{37}{33}\)
3. \(\frac{9}{7}-\frac{9}{7}\\=\frac{9-9}{7}\\=\frac{0}{7}\\=0\)
4. \(\frac{5}{4}-\frac{8}{9}\\=\frac{45}{36}-\frac{32}{36}\\=\frac{45-32}{36}\\=\frac{13}{36}\)
5. \(\frac{7}{4}-\frac{6}{5}\\=\frac{35}{20}-\frac{24}{20}\\=\frac{35-24}{20}\\=\frac{11}{20}\)
6. \(\frac{8}{7}-\frac{4}{9}\\=\frac{72}{63}-\frac{28}{63}\\=\frac{72-28}{63}\\=\frac{44}{63}\)
7. \(\frac{5}{6}-\frac{3}{7}\\=\frac{35}{42}-\frac{18}{42}\\=\frac{35-18}{42}\\=\frac{17}{42}\)
8. \(\frac{9}{10}-\frac{8}{9}\\=\frac{81}{90}-\frac{80}{90}\\=\frac{81-80}{90}\\=\frac{1}{90}\)
9. \(\frac{6}{11}-\frac{3}{10}\\=\frac{60}{110}-\frac{33}{110}\\=\frac{60-33}{110}\\=\frac{27}{110}\)
10. \(\frac{6}{5}-\frac{2}{9}\\=\frac{54}{45}-\frac{10}{45}\\=\frac{54-10}{45}\\=\frac{44}{45}\)
11. \(\frac{2}{5}-\frac{3}{8}\\=\frac{16}{40}-\frac{15}{40}\\=\frac{16-15}{40}\\=\frac{1}{40}\)
12. \(\frac{8}{11}-\frac{6}{11}\\=\frac{8-6}{11}\\=\frac{2}{11}\)