Question

Puteti sa ma ajutati cu proportia derivata :
$\frac{ x}{y} = \frac{2}{7}$

$\frac{2x + 3y}{5 y}$
Multumesc anticipat !

Answer 1

Descompui fractia in $\frac{2x}{5y} + \frac{3x}{5y} = \frac{2}{5} \frac{x}{y} + \frac{3}{5} \frac{x}{y} = \frac{2}{5}* \frac{2}{7} + \frac{3}{5} * \frac{2}{7}= \frac{4}{35} + \frac{6}{35} = \frac{10}{35} = \frac{2}{7}$