Răspuns :
4/3 + 7/12 = (4·4) /12 + 7/12 = 16/12 + 7/12= 23 /12= 1 intreg si 11/12= 1,91(6)
→ aduc fractiile la acelasi numitor (12), amplificand fractia 4/3 cu 4
8/14 + 2/7 = 4/7 + 2/7 = 6/7
8/14 → se simplifica cu 2 ⇒(8:2) / (14:2) = 4/7
→ aduc fractiile la acelasi numitor (12), amplificand fractia 4/3 cu 4
8/14 + 2/7 = 4/7 + 2/7 = 6/7
8/14 → se simplifica cu 2 ⇒(8:2) / (14:2) = 4/7