Răspunsuri

  • Utilizator Brainly
2014-08-25T15:09:24+03:00
a+b+c=220
a+b-c=44 => a+b=44+c
b+c-a=102 
 
44+c+c=220 => 44+2c=220 => 2c=220-44 =>2c=176 => c=88
 a+b=88+44 =>a+b=132           a+b=132        
                      b+88-a=102        b-a=24 => 2b=156=> b=78
a+b=122
a=132-78
a= 54
a+b+c=88+73+54=220

2 3 2
2014-08-25T15:16:05+03:00
A+b+c=220
a+b-c=44
⇒2(a+b)=264⇒a+b=132

a+b+c=220
b+c-a=102
⇒2(b+c)=322⇒b+c=161

a+b+c=220
a+b=132⇒c=220-132=88
b+c=161⇒b=161-88=73
a+b=132⇒a=132-73=59