Question

Daca x\y=2\7 atunci 3x+4y\2y-x=?
Am nevoie urgent!

Answer 1

$\frac{x}{y} = \frac{2}{7} =\ \textgreater \ x= \frac{2y}{7} \\ 3x+ \frac{4y}{2y} -x= \\ 3* \frac{2y}{7}+ \frac{4y}{2y}- \frac{2y}{7} = \\ \frac{6y}{7} - \frac{2y}{7}+2 \\ \frac{4y}{7}+2 \\ \frac{4y+14}{7}$