Odpowiedź:
Zad. 2
[tex]1) 3\frac{1}{2} +5\frac{2}{3} = \frac{21}{6} +\frac{34}{6} =\frac{55}{6} \\\\2) 4\frac{3}{4} +1\frac{1}{2} = \frac{19}{4} + \frac{6}{4}= \frac{25}{4}\\\\3) 2\frac{3}{4} +5\frac{4}{6}= \frac{33}{12}+\frac{68}{12}=\frac{101}{12}\\\\4) 4\frac{5}{6} +2\frac{2}{3} = \frac{29}{6}+\frac{16}{6}=\frac{45}{6}=7\frac{1}{2} \\\\Zad. 3\\a) 2\frac{3}{4}-1\frac{1}{2}= \frac{11}{4}-\frac{6}{4}=\frac{5}{4}=1\frac{1}{4}\\\\b) 5\frac{1}{3}-4\frac{5}{6}=\frac{32}{6} - \frac{29}{6} = \frac{3}{6}=\frac{1}{2}[/tex]