Question

calculați 2 2/7*[5/3-(3/2-5/4+2/3)*1 1/7] ​

Answer 1

Răspuns:

$2 \frac{2}{7} ( \frac{5}{3} - ( \frac{3}{2} - \frac{5}{4} + \frac{2}{3} ) \times \frac{11}{7}) = \\ \frac{16}{7} ( \frac{5}{3} - \frac{1}{4 } + \frac{2}{3} ) \times \frac{11}{7} = \\ \frac{16}{7} (( \frac{7}{3} - \frac{1}{4} ) \times \frac{11}{7} ) = \\ \frac{16}{7} ( \frac{25}{12} \times \frac{11}{7} ) = \frac{4 \times 25 \times 11}{7 \times 3 \times 7} = \\ \frac{1100}{147}$

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