Question

daca a/b =2/7, determinati 2a+b/5a+2b .
urgent dau coronita

Answer 1

$\frac{a}{b}= \frac{2}{7} =k$⇒a=2k,b=7k

$\frac{2a+b}{5a+2b}$=$\frac{4k+7k}{10k+14k} = \frac{11k}{24k} = \frac{11}{24}$

Answer 2

a=2
b=7
2a+b=4+7=11
5a+2b=10+14=24
2a+b/5a+2b=11/24