Răspuns:
5. direct rezolvarea nu mai scriu încă o data ecuația din carte.
a)
[tex]( \frac{1}{2} + \frac{4}{9} - \frac{1}{4} \div \frac{1}{216 }) = \\ \frac{25}{36} \times 216 = \\ 25 \times 6 = 150 [/tex]
b)
[tex](( \frac{1}{16} - \frac{1}{32} ) \div \frac{5}{8} ) \div (( \frac{26}{35} ) {}^{3} \div ( \frac{26}{35} ) {}^{2} ) = \\ ( \frac{1}{32} \times \frac{8}{5} ) \div \frac{26}{35} = \\ ( \frac{1}{4} \times \frac{1}{5} ) \div \times \frac{35}{26} = \\ \frac{1}{20} \times \frac{35}{26} = \\ \\ \frac{1}{4} \times \frac{35}{26} = \frac{7}{104} [/tex]
