Question

va rog.ajutor : as vrea p rezolvare

Answer 1

$\frac{x}{10} -2 \frac{1}{2} = \frac{x}{5} -2$
$\frac{x}{10} - \frac{2*2+1}{2} = \frac{2x}{10} -2$
$\frac{x}{10} -\frac{2x}{10} =-2+\frac{5}{2}$
$\frac{-x}{10} =\frac{-4+5}{2}$
$\frac{-x}{10} =\frac{1}{2}$
$\frac{-x}{10} =\frac{5}{10}$
$-x=5==\ \textgreater \ x=-5$