Question

1.$\frac{5}{12} : ( \frac{1}{3} - \frac{1}{2} ) + \frac{1}{6}$
2. Media aritmetica a numerelor $2- \sqrt{3}$ si $2+ \sqrt{3}$

Answer 1

5/12 / (-1/6) + 1/6 = - 5/12 * 6 +1/6= -5/2 +1/6= -15/6+1/6= -14/6 =-7/3
 (2-sqrt3+2+sqrt3)/2= (2+2)/2=4/2=2. 
Cred .

Answer 2

a)5/12:(1/3-1/2)+1/6=
5/12:(2-3/6)+1/6=
5/12:(-1/6)+1/6=
5/12×6/(-1)+1/6=
5/-2+1/6=15+1/-6=16/-6=8/-3
b)2-√3
2+√3
Ma=a+b/2
2-√3+2+√3/2=4/2=2
sucees