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Determina nr a,b,c știind ca: a+b=300 b+c=500 a+b+c=600 dau coroana


Răspuns :

a+b+c=600

a+b=300 => c=600-300. c=300

a+b+c=600

b+c=500. => a=600-500. a=100

a+b=300

a=100 => b=300-100. b=200