Question

Media-aritmetica-a-doua-numere-este-1.25
diferenta-dintre-ele-este-1/3
afla-numerele

Answer 1

M.a.=(a+b)/2=1,25 =>a+b=2,5
a-b=1/3 =>a=1/3 + b
1/3 + 2b = 2,5
2b=5/2 - 1/3
2b=(15-2)/15
2b=13/15 =>b=13/30
a=1/3 + 13/30
a=(10+13)/30
a=23/30

Answer 2

a+b/2=1,25
a+b=1,25x2
a+b=2,50
a/1 - b/1 = 1/3
3a/3 - 3b/3=1/3
3a-3b=1
3a+3b=2,5x3=7,5
3a=3b+1
3b+1+3b = 7,5 
6b=6,5
Cred ca de aici te  descurci ! Baftaa