a) [tex]1\frac{2}{3} + (-1,2) = 1\frac{2}{3} - 1\frac{1}{5} = \frac{5}{3} - \frac{6}{5} = \frac{25}{15} - \frac{18}{15} = \frac{7}{15}[/tex]
b) [tex]-2\frac{1}{5} - (-2,3) = -\frac{11}{5} + \frac{23}{10} = - \frac{22}{10} + \frac{23}{10} = -\frac{1}{10}[/tex]
c) [tex]-0,36 : (-1\frac{4}{5} ) = -\frac{9}{25} : (-\frac{9}{5}) = -\frac{9}{25} * (-\frac{5}{9}) = \frac{1}{5}[/tex]
d) [tex]-3\frac{2}{3} * 0,75 = -\frac{11}{3} * \frac{3}{4} = -11*\frac{1}{4} = -\frac{11}{4} = -2\frac{3}{4}[/tex]
e) [tex]-2 - (-1\frac{2}{3}) = -2 + 1\frac{2}{3} = -\frac{1}{3}[/tex]
f) 6 - 8,7 = -2,7
g) [tex]-5 + (-1,5) = -5 - 1,5 = -6,5[/tex]
h) [tex]-2\frac{3}{7} - (-1\frac{1}{3}) = -\frac{17}{7} + \frac{4}{3} = -\frac{51}{21} + \frac{28}{21} = -\frac{23}{21} = -1\frac{2}{21}[/tex]
