Question

Determinati numarul x,stiind ca:57pe31-16pe31=x-21pe31
NU IGNORATI DACA ŞTITI

Answer 1

$\frac{57}{31} - \frac{16}{31} =x- \frac{21}{31} \\ \\ \frac{57}{31} - \frac{16}{31} + \frac{21}{31} =x \\ \\ \frac{62}{31} =x=\ \textgreater \ x=2$