Question

Va rog mult Dau coroana!

Answer 1

$\frac{x}{5} = \frac{y}{4}$
a) 5y=4x
$y = \frac{4x}{5} \: \: | \div x$
$\frac{y}{x} = \frac{4}{5}$
b)4x=5y
$x = \frac{5y}{4} \: \: | \div y$
$\frac{x}{y} = \frac{5}{4}$