Question

cine ma ajuta la ex 1 .Va rog

Answer 1

$\frac{9}{4}- \frac{3}{4}= \frac{9-3}{4}= \frac{6}{4}= \frac{3}{2}$
$\frac{6}{7}- \frac{1}{2}= \frac{12}{14}- \frac{7}{14}= \frac{5}{14}$
$\frac{3}{4}+ \frac{2}{5}- \frac{1}{3}= \frac{90}{120}+ \frac{48}{120} - \frac{40}{120}[tex]= \frac{98}{120}$