Breuken aftrekken (reeks 2)

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Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{-16}{7}-\frac{3}{16}\\=\frac{-256}{112}-\frac{21}{112}\\=\frac{-256-21}{112}\\=\frac{-277}{112}\)
2. \(\frac{19}{6}-\frac{4}{11}\\=\frac{209}{66}-\frac{24}{66}\\=\frac{209-24}{66}\\=\frac{185}{66}\)
3. \(\frac{18}{5}-\frac{2}{9}\\=\frac{162}{45}-\frac{10}{45}\\=\frac{162-10}{45}\\=\frac{152}{45}\)
4. \(\frac{-11}{15}-\frac{12}{11}\\=\frac{-121}{165}-\frac{180}{165}\\=\frac{-121-180}{165}\\=\frac{-301}{165}\)
5. \(\frac{9}{4}-\frac{2}{3}\\=\frac{27}{12}-\frac{8}{12}\\=\frac{27-8}{12}\\=\frac{19}{12}\)
6. \(\frac{-15}{19}-\frac{11}{7}\\=\frac{-105}{133}-\frac{209}{133}\\=\frac{-105-209}{133}\\=\frac{-314}{133}\)
7. \(\frac{-12}{13}-\frac{14}{17}\\=\frac{-204}{221}-\frac{182}{221}\\=\frac{-204-182}{221}\\=\frac{-386}{221}\)
8. \(\frac{-10}{7}-\frac{19}{2}\\=\frac{-20}{14}-\frac{133}{14}\\=\frac{-20-133}{14}\\=\frac{-153}{14}\)
9. \(\frac{-5}{13}-\frac{12}{5}\\=\frac{-25}{65}-\frac{156}{65}\\=\frac{-25-156}{65}\\=\frac{-181}{65}\)
10. \(\frac{-4}{5}-\frac{20}{7}\\=\frac{-28}{35}-\frac{100}{35}\\=\frac{-28-100}{35}\\=\frac{-128}{35}\)
11. \(\frac{17}{2}-\frac{19}{4}\\=\frac{34}{4}-\frac{19}{4}\\=\frac{34-19}{4}\\=\frac{15}{4}\)
12. \(\frac{16}{3}-\frac{2}{17}\\=\frac{272}{51}-\frac{6}{51}\\=\frac{272-6}{51}\\=\frac{266}{51}\)