Răspuns :
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
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
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
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