Question

Inlocuieste literele cu numere naturale,astfel incat relatiile de mai jos sa fie adevarate: n/9+3/9=1 a/7+5/7<8/7 b/7+5/7 mai mic sau egal cu 9/7

Answer 1

n/9 + 3/9 = 1 (aducem la acelasi numitor)
n/9+3/9=9/9
n+3=9
n=9-3=6

a/7 + 5/7 < 8/7 (amplificam cu 7)
a+5<8
a<8-5
a<3

b/7 + 5/7 ≤ 9/7 (amplificam cu 7)
b+5 ≤ 9
b ≤ 9-5
b ≤ 4