Question

Pls ajutor!!!!!!!!
Dau coroana

Answer 1

(a+b)/2=2.8, a+b=5.6, a=5.6-b
(a+c)/2=3.5, a+c=7, a=7-c
(b+c)/2=3.9, b+c=7.8, c=7.8-b, inlocuim pe c in ecuatia a doua
a=7-(7.8-b)=7-7.8+b=b-0.8 inlocuim pe a in prima ecuatie
b-0.8=5.6-b, 2b=6.4, b=3.2
a=5.6-b=5.6-3.2=2.4
c=7.8-b=7.8-3.2=4.6