Răspunsuri

2014-03-19T16:14:59+02:00
A+b=475
a \frac{a}{b} = \frac{2}{3}
a= \frac{2b}{3}
 \frac{2b}{3} +b=475
 (aducem la acelasi numitor. adica amplificam cu 3 )
2b+3b=475x3
5b=1425
b=1425:5 => b=285
a+285=475
a=475-285 => a= 190