Răspuns :
[tex] \frac{2}{3} x=50 \\ 2x=50* 3 \\ 2x=150=\ \textgreater \ x=150:2=\ \textgreater \ x=75 lei .a.avut\\ 75-50=25.lei.i-a.ramas[/tex]
fie X suma de bani pe care a avut-o⇒2/3 din X=50⇒X=(50×3)/2=150/2=75
daca a cheltuit 50 lei⇒75-50=25 lei suma ramasa
daca a cheltuit 50 lei⇒75-50=25 lei suma ramasa