1. (-1)³ 2.-2(-1) 3.-(-4)(-) 4. (-2) 5. -2-3-(-12) 6. 5,07 (-3,07) 7.-46 8.--(-3) 9. (-1) 10.-5(-) -6.7-(-2,4) 12.-1 13.-2( 14.-11 B 15.-8,4-(-)(-1) 16. 1,05 10,4 17. (-2) 18.-2-(-2)-0,5 19.()(-4) 20. -6,5 (-)(-8,9)

1. (-1)³ = -1
2. -2 \(\frac{3}{7}\) \(\cdot\) (-1 \(\frac{1}{12}\)) = \(\frac{95}{42}\)
3. -\(\frac{2}{5}\) \(\cdot\) (-4) \(\cdot\) (- \(\frac{2}{5}\)) = -\(\frac{16}{25}\)
4. (-2 \(\frac{3}{2}\))² = \(\frac{49}{4}\)
5. -2 \(\cdot\) 3 \(\frac{5}{6}\) \(\cdot\) (-12) = 86
6. 5,07 \(\cdot\) (-3,07) = -15,5649
7. -4 \(\frac{2}{5}\) \(\cdot\) \(\frac{5}{11}\) \(\cdot\) 6 = -\(\frac{756}{55}\)
8. -\(\frac{10}{21}\) \(\cdot\) (-3 \(\frac{1}{2}\))² = -\(\frac{5}{6}\)
9. (-1 \(\frac{1}{4}\))² = \(\frac{25}{16}\)
10. -5 \(\frac{5}{6}\) \(\cdot\) (- \(\frac{3}{7}\)) = \(\frac{65}{14}\)
11. -6,7 \(\cdot\) \(\frac{5}{24}\) \(\cdot\) (-2,4) = \(\frac{67}{10}\) \(\cdot\) \(\frac{5}{24}\) \(\cdot\) \(\frac{24}{10}\) = \(\frac{67}{10}\) \(\cdot\) \(\frac{1}{2}\) = \(\frac{67}{20}\)
12. -1 \(\frac{1}{14}\) \(\cdot\) 2 \(\frac{1}{3}\) = -\(\frac{75}{42}\)
13. -2 \(\frac{5}{7}\) \(\cdot\) (\(\frac{1}{3}\))³ = -\(\frac{19}{63}\)
14. -1 \(\frac{1}{8}\) \(\cdot\) 1 \(\frac{33}{33}\) = -\(\frac{9}{8}\)
15. -8,4 \(\cdot\) (- \(\frac{7}{12}\)) \(\cdot\) (-1) = -4,9
16. -1,05 \(\cdot\) 10,4 = -10,92
17. (-2 \(\frac{2}{3}\))² \(\cdot\) \(\frac{5}{24}\) = \(\frac{50}{27}\)
18. -2 \(\frac{2}{5}\) \(\cdot\) (-2 \(\frac{4}{24}\)) \(\cdot\) -0,5 = -\(\frac{33}{25}\)
19. (\(\frac{3}{5}\))² \(\cdot\) (-4) = -\(\frac{36}{25}\)
20. -6,5 \(\cdot\) (- \(\frac{5}{24}\)) \(\cdot\) (-8,9) = -\(\frac{5785}{480}\)

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