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Aflati nr a,b,c stiind ca :
a+2b+2c=302
b=a+9
aX(b-a)=414



















































Răspuns :

a(a+9-a)=414
a=414/9
a=46
b=46+9
b=55
2c=302-2x55-46
2c=146
c=73