Breuken aftrekken (reeks 2)

Hoofdmenu Eentje per keer  🖨

Trek de breuken af

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

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Trek de breuken af

Verbetersleutel

1. \(\frac{1}{18}-\frac{7}{6}\\=\frac{1-7}{18}\\=\frac{-6}{18}\\=\frac{-1}{3}\)
2. \(\frac{-19}{13}-\frac{12}{19}\\=\frac{-361}{247}-\frac{156}{247}\\=\frac{-361-156}{247}\\=\frac{-517}{247}\)
3. \(\frac{-15}{4}-\frac{8}{15}\\=\frac{-225}{60}-\frac{32}{60}\\=\frac{-225-32}{60}\\=\frac{-257}{60}\)
4. \(\frac{11}{3}-\frac{18}{5}\\=\frac{55}{15}-\frac{54}{15}\\=\frac{55-54}{15}\\=\frac{1}{15}\)
5. \(\frac{-17}{6}-\frac{3}{4}\\=\frac{-34}{12}-\frac{9}{12}\\=\frac{-34-9}{12}\\=\frac{-43}{12}\)
6. \(\frac{16}{9}-\frac{4}{5}\\=\frac{80}{45}-\frac{36}{45}\\=\frac{80-36}{45}\\=\frac{44}{45}\)
7. \(\frac{19}{10}-\frac{6}{19}\\=\frac{361}{190}-\frac{60}{190}\\=\frac{361-60}{190}\\=\frac{301}{190}\)
8. \(\frac{7}{2}-\frac{16}{3}\\=\frac{21}{6}-\frac{32}{6}\\=\frac{21-32}{6}\\=\frac{-11}{6}\)
9. \(\frac{11}{6}-\frac{9}{10}\\=\frac{55}{30}-\frac{27}{30}\\=\frac{55-27}{30}\\=\frac{28}{30}\\=\frac{14}{15}\)
10. \(\frac{-2}{5}-\frac{16}{3}\\=\frac{-6}{15}-\frac{80}{15}\\=\frac{-6-80}{15}\\=\frac{-86}{15}\)
11. \(\frac{10}{19}-\frac{13}{6}\\=\frac{60}{114}-\frac{247}{114}\\=\frac{60-247}{114}\\=\frac{-187}{114}\)
12. \(\frac{-12}{17}-\frac{18}{17}\\=\frac{-12-18}{17}\\=\frac{-30}{17}\)