Breuken aftrekken (reeks 2)

Hoofdmenu Eentje per keer 

Trek de breuken af

  1. \(\frac{-20}{11}-\frac{18}{17}\)
  2. \(\frac{-16}{3}-\frac{13}{14}\)
  3. \(\frac{-5}{16}-\frac{14}{9}\)
  4. \(\frac{12}{19}-\frac{11}{17}\)
  5. \(\frac{-9}{19}-\frac{8}{7}\)
  6. \(\frac{-10}{13}-\frac{12}{7}\)
  7. \(\frac{-12}{7}-\frac{5}{16}\)
  8. \(\frac{-10}{11}-\frac{10}{17}\)
  9. \(\frac{-9}{16}-\frac{6}{17}\)
  10. \(\frac{20}{19}-\frac{10}{11}\)
  11. \(\frac{-10}{11}-\frac{5}{4}\)
  12. \(\frac{20}{11}-\frac{8}{17}\)

Trek de breuken af

Verbetersleutel

  1. \(\frac{-20}{11}-\frac{18}{17}\\=\frac{-340}{187}-\frac{198}{187}\\=\frac{-340-198}{187}\\=\frac{-538}{187}\)
  2. \(\frac{-16}{3}-\frac{13}{14}\\=\frac{-224}{42}-\frac{39}{42}\\=\frac{-224-39}{42}\\=\frac{-263}{42}\)
  3. \(\frac{-5}{16}-\frac{14}{9}\\=\frac{-45}{144}-\frac{224}{144}\\=\frac{-45-224}{144}\\=\frac{-269}{144}\)
  4. \(\frac{12}{19}-\frac{11}{17}\\=\frac{204}{323}-\frac{209}{323}\\=\frac{204-209}{323}\\=\frac{-5}{323}\)
  5. \(\frac{-9}{19}-\frac{8}{7}\\=\frac{-63}{133}-\frac{152}{133}\\=\frac{-63-152}{133}\\=\frac{-215}{133}\)
  6. \(\frac{-10}{13}-\frac{12}{7}\\=\frac{-70}{91}-\frac{156}{91}\\=\frac{-70-156}{91}\\=\frac{-226}{91}\)
  7. \(\frac{-12}{7}-\frac{5}{16}\\=\frac{-192}{112}-\frac{35}{112}\\=\frac{-192-35}{112}\\=\frac{-227}{112}\)
  8. \(\frac{-10}{11}-\frac{10}{17}\\=\frac{-170}{187}-\frac{110}{187}\\=\frac{-170-110}{187}\\=\frac{-280}{187}\)
  9. \(\frac{-9}{16}-\frac{6}{17}\\=\frac{-153}{272}-\frac{96}{272}\\=\frac{-153-96}{272}\\=\frac{-249}{272}\)
  10. \(\frac{20}{19}-\frac{10}{11}\\=\frac{220}{209}-\frac{190}{209}\\=\frac{220-190}{209}\\=\frac{30}{209}\)
  11. \(\frac{-10}{11}-\frac{5}{4}\\=\frac{-40}{44}-\frac{55}{44}\\=\frac{-40-55}{44}\\=\frac{-95}{44}\)
  12. \(\frac{20}{11}-\frac{8}{17}\\=\frac{340}{187}-\frac{88}{187}\\=\frac{340-88}{187}\\=\frac{252}{187}\)
Oefeningengenerator vanhoeckes.be/wiskunde 2021-12-02 00:49:10