Question

Ajutatima Va Rog
Stiind ca 3a=5b
Determinati : a supra b si 6a+b supra 9a+3b

Answer 1

$3a=5b \to a=\frac{5b}{3} \\\\ \frac{a}{b}=\frac{5}{3} \\\\\\\\ \frac{6a+b}{9a+3b}=\frac{6* \frac{5b}{3}+b}{9*\frac{5b}{3}+3b}= \frac{2*5b+b}{3*5b+3b} = \frac{10b+b}{15b+3b}=\frac{11b}{18b} \longrightarrow \frac{11}{18}$