Question

0,8supra x-1 e 4supra 5 afla valoarea lui x

Answer 1

0,8=8/10=4/5
$\frac{ \frac{4}{5} }{x-1} = \frac{4}{5} =\ \textgreater \ \frac{4}{5} (x-1)= \frac{4}{5} =\ \textgreater \ x-1=1 =\ \textgreater \ x=2$