Question

Daca 4x=5y atunci
$\frac{3x}{10y}$
este egal cu.....

Answer 1

$4x = 5y \: | \div y$

$\frac{4x}{y} = 5$

$4 \times \frac{x}{y} = 5$

$\frac{x}{y} = \frac{5}{4}$

$\frac{3x}{10y} = \frac{3}{10} \times \frac{x}{y} = \frac{3}{10} \times \frac{5}{4} = \frac{3 \times 5}{10 \times 4} = \frac{15}{40} = \frac{3}{8}$