Question

determinati citul dintre diferenta fractiilor 3 si 1 supra 5 si 2 si 1 supra 2 ?

Answer 1

$(3 - \frac{1}{5} ) \div (2 - \frac{1}{2} )$

$= ( \frac{15}{5} - \frac{1}{5} ) \div ( \frac{4}{2} - \frac{1}{2} )$

$= \frac{15 - 1}{5} \div \frac{4 - 1}{2}$

$= \frac{14}{5} \div \frac{3}{2}$

$= \frac{14}{5} \times \frac{2}{3}$

$= \frac{14 \times 2}{5 \times 3}$

$= \frac{28}{15}$