Question

a). 2 1supra2(+5supra4)-1,(5)

Answer 1

$\frac{21}{2} + \frac{5}{4} - 1.(5)$
$\frac{21}{2} + \frac{5}{4 } - \frac{15 - 1}{9}$
$\frac{21}{2} + \frac{5}{4} - \frac{14}{9}$

numitorul comun este 36 =>
$\frac{378 + 45 - 56}{36}$


$\frac{367}{36}$