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a+b=325,b+c=296,c+a=189calculati a,b,c


Răspuns :

adun cele 3 expresii si obtin:

a+b+b+c+a+c=325+296+189
2a+2b+2c=810
2×(a+b+c)=810
a+b+c=405
a+b=325

c=405-325
c=80

a+c=189
a=189-80=109

b+c=296
b=296-80=216