Question

Daca a supra 15 = cu 2 supra 5 atunci a = ...... Ajutor Pls :D :))

Answer 1

$\frac{a}{15}= \frac{2}{5} \Rightarrowa= \frac{2*15}{5}=6. \\ \\ Solutie:~\boxed{a=6}.$

Answer 2

$\frac{a}{15} = \frac{2}{5}$⇒
a=2·15/5=2·3=6