Question

найдите а+9в+38/а+3в+19 если а/в 3

Answer 1

$\frac{a}{b}=3$
a=3b
$\frac{a+9b+38}{a+3b+19}= \frac{3b+9b+38}{3b+3b+19}= \frac{12b+38}{6b+19}=2$