Odpowiedź:
a) 2 [tex]\frac{2}{3}[/tex] + 1 [tex]\frac{1}{2}[/tex] + [tex]\frac{5}{6}[/tex] = 2 [tex]\frac{4}{6} + 1 \frac{3}{6} + \frac{5}{6} = 3 \frac{12}{6} = 4[/tex]
b) [tex]3 - 1\frac{4}{9} = 2\frac{9}{9} - 1\frac{4}{9} = 1\frac{5}{9}[/tex]
c) [tex]2\frac{1}{4}[/tex] × [tex]1\frac{5}{6} = \frac{9}{4}[/tex] × [tex]\frac{11}{6} = \frac{99}{24} = \frac{33}{18}[/tex] [tex]= 3\frac{15}{18}[/tex]
d) [tex]1\frac{3}{10} : 1\frac{4}{5} = \frac{13}{10} : \frac{9}{5} = \frac{13}{10}[/tex] × [tex]\frac{5}{9} = \frac{65}{90} = \frac{13}{18}[/tex]
