Question

repedeee
dau coroana ​

Answer 1

$\bf 14.\\ \\ \it 28a=35b \Rightarrow \dfrac{a}{b}=\dfrac{\ 35^{(7}}{28} \Rightarrow \dfrac{a}{b}=\dfrac{^{9)}5}{\ 4} \Rightarrow \dfrac{a}{b}=\dfrac{45}{36}\ \ \ \ \ (*)\\ \\ \\ \dfrac{a}{b}=\dfrac{x}{36}\ \stackrel{(*)}{\Longrightarrow}\ \ x=45\ .$

$\bf 15,\\ \\ \it \dfrac{a}{2}=\dfrac{b}{3} \Rightarrow 3a=2b|_{\cdot17} \Rightarrow 51a=34b$