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Stiind ca a•(b+c)=3114 si a•b=1107 aflati a•c

Răspuns :

a•(b+c)=a•b+a•c=3114
1107+a•c=3114
a•c=3114-1107
a•c=2007
a(b+c)=3114
ab+ac=3114
1107+ac=3114
ac=3114-1107
ac=2007