Question

efectuati mai intai simnplificare si apoi calculati 31/8-15/40 f) 25/9-28/63 h)41/6-35/30

Answer 1

$\frac{31}{8} - \frac{15}{40} = \frac{31}{8} - \frac{3}{8} = \frac{28}{8} = \frac{7}{2}$
$\frac{25}{9} - \frac{28}{63} = \frac{25}{9} - \frac{4}{9} = \frac{21}{9} = \frac{7}{3}$
41/6-35/30=41/6-7/6=34/6=17/3