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axb-axc=1440 si a=45,calculati b-c

Răspuns :


a(b-c)=1440

b-c=1440/a=1440/45=480

a×b-a×c=1440=a×(b-c)
=45×(b-c)=1440
=b-c=1440:45
=b-c=302