Răspunsuri

2014-09-15T15:14:44+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
2014-09-15T15:20:27+03:00
A + B + C = 220
(A + B) - C = 44
(B + C) - A = 122
A + B = 44 + C  INLOCUIM IN PRIMA ECUATIE
44 + C + C = 220
2C = 220 - 44
2C = 176
C = 88
A + B = 44 + 88
A + B = 132
B - A = 122 - 88
- A + B = 34 SI A + B = 132 LE ADUNAM
2B = 166
B = 166 : 2
B = 83
A = 132 - 83
A = 49
49 + 83 + 88 = 220 SI RESPECTA CONDITIILE CERUTE