Question

va rog sa ma ajutati la ex. 2

Answer 1

$\frac{x}{y} = \frac{2}{7} \\ \frac{x}{2} = \frac{y}{7} = k \\ x= 2k \\ y = 7k \\ \frac{x + y}{x - y} = \frac{2k + 7k}{7k - 2k } = \frac{9}{5} k$
Raspuns corect : c) 9/5