Breuken aftrekken (reeks 2)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

1. \(\frac{-2}{11}-\frac{7}{5}\)
2. \(\frac{14}{19}-\frac{12}{19}\)
3. \(\frac{17}{19}-\frac{6}{11}\)
4. \(\frac{-12}{5}-\frac{15}{16}\)
5. \(\frac{-18}{17}-\frac{2}{7}\)
6. \(\frac{-19}{20}-\frac{19}{7}\)
7. \(\frac{-5}{3}-\frac{4}{19}\)
8. \(\frac{9}{2}-\frac{19}{16}\)
9. \(\frac{3}{14}-\frac{7}{11}\)
10. \(\frac{-8}{5}-\frac{13}{14}\)
11. \(\frac{-16}{7}-\frac{14}{3}\)
12. \(\frac{-15}{8}-\frac{14}{11}\)

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Trek de breuken af

Verbetersleutel

1. \(\frac{-2}{11}-\frac{7}{5}\\=\frac{-10}{55}-\frac{77}{55}\\=\frac{-10-77}{55}\\=\frac{-87}{55}\)
2. \(\frac{14}{19}-\frac{12}{19}\\=\frac{14-12}{19}\\=\frac{2}{19}\)
3. \(\frac{17}{19}-\frac{6}{11}\\=\frac{187}{209}-\frac{114}{209}\\=\frac{187-114}{209}\\=\frac{73}{209}\)
4. \(\frac{-12}{5}-\frac{15}{16}\\=\frac{-192}{80}-\frac{75}{80}\\=\frac{-192-75}{80}\\=\frac{-267}{80}\)
5. \(\frac{-18}{17}-\frac{2}{7}\\=\frac{-126}{119}-\frac{34}{119}\\=\frac{-126-34}{119}\\=\frac{-160}{119}\)
6. \(\frac{-19}{20}-\frac{19}{7}\\=\frac{-133}{140}-\frac{380}{140}\\=\frac{-133-380}{140}\\=\frac{-513}{140}\)
7. \(\frac{-5}{3}-\frac{4}{19}\\=\frac{-95}{57}-\frac{12}{57}\\=\frac{-95-12}{57}\\=\frac{-107}{57}\)
8. \(\frac{9}{2}-\frac{19}{16}\\=\frac{72}{16}-\frac{19}{16}\\=\frac{72-19}{16}\\=\frac{53}{16}\)
9. \(\frac{3}{14}-\frac{7}{11}\\=\frac{33}{154}-\frac{98}{154}\\=\frac{33-98}{154}\\=\frac{-65}{154}\)
10. \(\frac{-8}{5}-\frac{13}{14}\\=\frac{-112}{70}-\frac{65}{70}\\=\frac{-112-65}{70}\\=\frac{-177}{70}\)
11. \(\frac{-16}{7}-\frac{14}{3}\\=\frac{-48}{21}-\frac{98}{21}\\=\frac{-48-98}{21}\\=\frac{-146}{21}\)
12. \(\frac{-15}{8}-\frac{14}{11}\\=\frac{-165}{88}-\frac{112}{88}\\=\frac{-165-112}{88}\\=\frac{-277}{88}\)