Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{9}{2}-\frac{4}{7}\\=\frac{63}{14}-\frac{8}{14}\\=\frac{63-8}{14}\\=\frac{55}{14}\)
2. \(\frac{9}{10}-\frac{4}{5}\\=\frac{9-4}{10}\\=\frac{5}{10}\\=\frac{1}{2}\)
3. \(\frac{3}{2}-\frac{2}{5}\\=\frac{15}{10}-\frac{4}{10}\\=\frac{15-4}{10}\\=\frac{11}{10}\)
4. \(\frac{5}{2}-\frac{6}{7}\\=\frac{35}{14}-\frac{12}{14}\\=\frac{35-12}{14}\\=\frac{23}{14}\)
5. \(\frac{5}{11}-\frac{4}{11}\\=\frac{5-4}{11}\\=\frac{1}{11}\)
6. \(\frac{7}{4}-\frac{2}{5}\\=\frac{35}{20}-\frac{8}{20}\\=\frac{35-8}{20}\\=\frac{27}{20}\)
7. \(\frac{9}{8}-\frac{10}{11}\\=\frac{99}{88}-\frac{80}{88}\\=\frac{99-80}{88}\\=\frac{19}{88}\)
8. \(\frac{5}{2}-\frac{7}{9}\\=\frac{45}{18}-\frac{14}{18}\\=\frac{45-14}{18}\\=\frac{31}{18}\)
9. \(\frac{9}{11}-\frac{4}{9}\\=\frac{81}{99}-\frac{44}{99}\\=\frac{81-44}{99}\\=\frac{37}{99}\)
10. \(\frac{6}{7}-\frac{3}{10}\\=\frac{60}{70}-\frac{21}{70}\\=\frac{60-21}{70}\\=\frac{39}{70}\)
11. \(\frac{6}{7}-\frac{6}{11}\\=\frac{66}{77}-\frac{42}{77}\\=\frac{66-42}{77}\\=\frac{24}{77}\)
12. \(\frac{7}{3}-\frac{3}{11}\\=\frac{77}{33}-\frac{9}{33}\\=\frac{77-9}{33}\\=\frac{68}{33}\)