Răspunsuri

2014-08-25T12:52:30+03:00
{a,b} d.p. {4 , 5 } ⇒ a/4 = b/5 = k => a= 4k , b=5k
a+b = 18 => 4k+5k = 18 => 9k = 18 => k = 18 / 9 => k=2 => a = 4*2 = 8 , b=5*2 = 10 
Sper ca te-am ajutat . :)
16 3 16
2014-08-25T12:53:01+03:00
A,b  dp cu 4,5

a/4=b/5=k
a=4k
b=5k

a+b=18
4k+5k=18
9k=18
k=2

a=4*2=8
b=5*2=10
13 4 13