Odpowiedź:
1. [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} + 9 * \frac{7}{6} = \frac{2}{3} + \frac{21}{2} = \frac{4}{6} + \frac{63}{6} = \frac{67}{6} = 11\frac{1}{6}[/tex]
2. [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]
3. [tex]3\frac{1}{4} : ((2\frac{5}{8} - 2\frac{1}{6} ) : 2\frac{1}{2} ) = \frac{13}{4} : ((\frac{21}{8} - \frac{13}{6} ) : \frac{5}{2} ) = \frac{13}{4} : ((\frac{63}{24} - \frac{52}{24} ) : \frac{5}{2} ) = \frac{13}{4} : (\frac{11}{24} : \frac{5}{2} ) = \frac{13}{4} : (\frac{11}{24} * \frac{2}{5} ) = \frac{13}{4} : \frac{11}{60} = \frac{13}{4} * \frac{60}{11} = \frac{195}{11} = 17\frac{8}{11}[/tex]
Szczegółowe wyjaśnienie:
mam nadzieję że pomogłam
