Question

a+b=38 a+c=42 b+c=54 sa se afle nr

Answer 1

a+c=42=> a=42-c
b+c=54=> b=54-c

a+b=38
42-c+54-c=38
42+54-38=c+c
68=2c
c=34

a=42-34 => a=8
b=54-34=> b=10