Răspuns:
sper ca imi intelegi scrisul :) spor!
2 si 2/5=(2·5+2)/5=12/5
1 si 2/5=7/5
0,2(3)=(23-2)/90=21/90=7/30
(12/5-7/5-1/6):(7/30·10/7+1/2)²=
(⁶⁾5/5-⁵⁾1/6):(70/210+1/2)²=
(30/30-5/30):(²⁾1/3+³⁾1/2)²=
25/30:(2/6+3/6)²=
5/6:(5/6)²=
5/6:25/36=
5/6·36/25=6/5=1,2
