Question

dau coroana!!!
acest ex

Answer 1

Răspuns:

¼

Explicație pas cu pas:

$\frac{x}{2} = \frac{y}{5} = k \\ x = 2k ; \ y = 5k$

=>

$\frac{4x - y}{x + 2y} = \frac{4 \cdot 2k - 1 \cdot 5k}{1 \cdot 2k + 2 \cdot 5k} = \\ = \frac{8k - 5k}{2k + 10k} = \frac{3k^{(3k} }{12k} = \frac{1}{4}$