Carlculeaza:
ex: a)
[tex] \frac{1}{4} - \frac{7}{6}+( - \frac{5}{2})= \frac{1}{4}^{3} -\frac{7}{6}^{2} - \frac{5}{2}^{6} = \frac{13}{12} - \frac{14}{12} - \frac{30}{12} = \frac{3 - 14 - 30}{12} = - \frac{41}{12} [/tex]

b)
[tex] ( - \frac{5}{3} ) - \frac{7}{12} - \frac{11}{18 } = [/tex]
c)
[tex] \frac{7}{4}+ \frac{5}{20} - (- \frac{9}{2} ) - \frac{11}{5} [/tex]
d)
[tex] \frac{8}{9} \div ( - \frac{50}{27} ) \div ( - \frac{8}{5} )[/tex]
e)
[tex] \frac{7}{9} \times \frac{24}{15} \div ( - \frac{21}{10} )[/tex]
f)
[tex]( - \frac{17}{24} ) \div ( - \frac{5}{12} \times ( - \frac{30}{34}\div \frac{9}{4})[/tex]




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