Salut!
a)n+3/23 < 7/23 | : 23
n+3 < 7 | -3
n<4 => n={0,1,2,3}
b)17/n+5 > 17/9
scuze, dar nu stiu regula
c) 2n+1/47 <5/47 | : 47
2n+1 < 5 |-1
2n<4 | :2
n < 2 => n={0,1}
Spor!
