[tex]10 \frac{2}{3} - 4 \frac{7}{8} + \frac{5}{6} = 10 \frac{16}{24} - 4 \frac{21}{24} + \frac{20}{24} = 10 \frac{36}{24} - 4 \frac{21}{24} = 6 \frac{15}{24} [/tex]
[tex] \frac{5}{7} \div 1.75 \div 1 \frac{1}{14} = \frac{5}{7} \div 1 \frac{3}{4} \div \frac{15}{14} = \frac{5}{7} \div \frac{7}{4} \div \frac{15}{14} = \frac{5}{7} \times \frac{4}{7} \times \frac{14}{15} = \frac{5}{7} \times \frac{4}{1} \times \frac{2}{15} = \frac{40}{105} = \frac{8}{21} [/tex]
Myślę że pomogłem ;)
