Odpowiedź:
a)[tex]1\frac{2}{3} :2\frac{1}{2} +9*1\frac{1}{6} =\frac{5}{3} :\frac{5}{2} +9*\frac{7}{6} =\frac{5}{3} *\frac{2}{5} +\frac{21}{2} =\frac{2}{3} +\frac{21}{2} =\frac{4}{6} +\frac{63}{6} =\frac{67}{6} =11\frac{1}{6}[/tex]
b)[tex](1\frac{1}{2} )^2-1\frac{3}{5} :2\frac{2}{3} =(\frac{3}{2} )^2-\frac{8}{5} :\frac{8}{3} =\frac{9}{4} -\frac{8}{5} *\frac{3}{8} =\frac{9}{4} -\frac{3}{5} =\frac{45}{20} -\frac{12}{20} =\frac{33}{20} =1\frac{13}{20}[/tex]
Szczegółowe wyjaśnienie:
