Question

Calcule x e y. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Answer 1

$\frac{2}{3}=\frac{8}{x}$

$2x=8\cdot 3$

$2x=24$

$x=\frac{24}{2}$

$x=12$

$\frac{y}{21} =\frac{2}{3}$

$3y=2\cdot 21$

$3y=42$

$y=\frac{42}{3}$

$y=14$