Breuken aftrekken (reeks 1)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

---

Trek de breuken af

Verbetersleutel

1. \(\frac{8}{7}-\frac{6}{11}\\=\frac{88}{77}-\frac{42}{77}\\=\frac{88-42}{77}\\=\frac{46}{77}\)
2. \(\frac{7}{11}-\frac{6}{11}\\=\frac{7-6}{11}\\=\frac{1}{11}\)
3. \(\frac{8}{5}-\frac{3}{11}\\=\frac{88}{55}-\frac{15}{55}\\=\frac{88-15}{55}\\=\frac{73}{55}\)
4. \(\frac{10}{7}-\frac{6}{5}\\=\frac{50}{35}-\frac{42}{35}\\=\frac{50-42}{35}\\=\frac{8}{35}\)
5. \(\frac{7}{4}-\frac{8}{11}\\=\frac{77}{44}-\frac{32}{44}\\=\frac{77-32}{44}\\=\frac{45}{44}\)
6. \(\frac{5}{6}-\frac{5}{11}\\=\frac{55}{66}-\frac{30}{66}\\=\frac{55-30}{66}\\=\frac{25}{66}\)
7. \(\frac{5}{9}-\frac{2}{7}\\=\frac{35}{63}-\frac{18}{63}\\=\frac{35-18}{63}\\=\frac{17}{63}\)
8. \(\frac{5}{4}-\frac{2}{3}\\=\frac{15}{12}-\frac{8}{12}\\=\frac{15-8}{12}\\=\frac{7}{12}\)
9. \(\frac{9}{4}-\frac{10}{7}\\=\frac{63}{28}-\frac{40}{28}\\=\frac{63-40}{28}\\=\frac{23}{28}\)
10. \(\frac{5}{3}-\frac{2}{11}\\=\frac{55}{33}-\frac{6}{33}\\=\frac{55-6}{33}\\=\frac{49}{33}\)
11. \(\frac{7}{4}-\frac{10}{9}\\=\frac{63}{36}-\frac{40}{36}\\=\frac{63-40}{36}\\=\frac{23}{36}\)
12. \(\frac{6}{5}-\frac{5}{9}\\=\frac{54}{45}-\frac{25}{45}\\=\frac{54-25}{45}\\=\frac{29}{45}\)