Odpowiedź:
[tex] \frac{18}{35} \div \frac{3}{5} = \frac{18}{35 } \times \frac{5}{8} = \frac{90}{105} = \frac{6}{7} [/tex]
[tex]7 \frac{7}{8} + 1 \frac{1}{8} \div 5 \frac{5}{8} = \frac{63}{8} + \frac{9}{8} \div \frac{45}{8} = \frac{63}{8} + \frac{9}{8} \times \frac{8}{45} = \frac{63}{8} + \frac{72}{360} = \frac{2835}{360} + \frac{72}{360} = \frac{2907}{360} = \frac{323}{40} [/tex]
mam nadzieję, że pomogłam<3
