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Afla suma a+b+c, stiind ca sunt indeplinite simultan urmatoarele conditii:
a+b=222 444
b+c=170 013
a+c=203543


Răspuns :

2a+2b+2c=222444+170013+203543
2a+2b+2c=596000
2(a+b+c)=596000
a+b+c=596000:2
a+b+c=298000