Question

5 intregi si 2supra7+[2intregi și 3 supra 14-(29supra7-1supra2)]=

Answer 1

$5 \frac{2}{7} + [2 \frac{3}{14} - ( \frac{29}{7} - \frac{1}{2}) ]$

$= \frac{5 \times 7 + 2}{7} + [ \frac{2 \times 14 + 3}{14} - ( \frac{29}{7} - \frac{1}{2} )]$

$= \frac{37}{7} + \frac{31}{14} - \frac{29}{7} + \frac{1}{2}$

$= \frac{74}{14} + \frac{31}{14} - \frac{58}{14} + \frac{7}{14}$

$= \frac{74 + 31 - 58 + 7}{14}$

$= \frac{54}{14}$

$= \frac{27}{7}$