[tex]f) \: \: \frac{5 \frac{3}{4} - 8 \frac{1}{3} }{ \frac{1}{2} - {( \frac{2}{3}) }^{2} } - \frac{2}{3} \div ( - \frac{4}{27} ) = \frac{5 \frac{9}{12} - 8 \frac{4}{12} }{ \frac{1}{2} - \frac{4}{9} } - \frac{2}{3} \times ( - \frac{27}{4} ) = \frac{ - 3 \frac{7}{12} }{ \frac{9}{18} - \frac{8}{18} } - ( - \frac{9}{2} ) = \frac{ - \frac{43}{12} }{ \frac{1}{18} } + \frac{9}{2} = - \frac{43}{12} \div \frac{1}{18} + 4 \frac{1}{2} = - \frac{43}{12} \times 18 + 4 \frac{1}{2} = - 64.5 + 4.5 = - 60[/tex]
Mam nadzieję, że pomogłam! ❤️
