dau coroana!!!!!!
va rog cat mai rapid

[tex]\frac{a}{2} = \frac{b}{3} = k[/tex]
a= 2k
b=5k
[tex]\frac{a + b}{ 5b} = \frac{2k + 3k}{ 5* 3k} = \frac{5k}{ 15k} = \frac{1}{3}[/tex]
1/3 (c)