Răspuns:
[tex] \frac{(2 \frac{1}{20} - 1.55) \times 4 + \frac{4}{5} }{(3 - 2 \frac{1}{2} ) \div 0.02} \\ \\ = \frac{( \frac{41}{20 } - \frac{31}{20}) \times 4 + \frac{4}{5} }{(3 - \frac{5}{2}) \div \frac{1}{50} } \\ \\ = \frac{ \frac{1}{2} \times 4 + \frac{4}{5} }{ \frac{1}{2} \div \frac{1}{50} } \\ \\ = \frac{ \frac{1}{2} \times 4 + \frac{4}{5} }{ \frac{1}{2} \times {}{50} } \\ \\ = \frac{2 + \frac{4}{5} }{25} \\ \\ = \frac{ \frac{14}{5} }{25} \\ \\ = \frac{14}{125} [/tex]
