Question

precizati valoarea de adevar a propozitiilor a)2_3+5_7=2+5_3=7 b)2_3+5_3=7_6 c)1+1_2+1_3=11_6 d)5_11 +2,(56)=6 barile de varog pliz pliz apropo barile jos sunt supra

Answer 1

a) 2/3 + 5/7 = 2 + 5/3 = 7
14/21 + 15/21 = 42/21 + 15/21 = 7
29/21 = 57/21 = 7 FALS

b) 2/3 + 5/3 = 7/6
7/6 = 7/6 ADEVARAT

c) 1 + 1/2 + 1/3 = 11/6
6/6 + 3/6 + 2/6 = 11/6
11/6 = 11/6 ADEVARAT

Pentru "supra" am folosit "/".