Răspuns :
437•13+12•437+25•563
=437•(13+12)+25•563
=437•25+25•563
=10925+14075
=25000
=437•(13+12)+25•563
=437•25+25•563
=10925+14075
=25000
437*(13+12)+25*563=
437*25+25*563=
25*(437+563)=25*1000=25000.
437*25+25*563=
25*(437+563)=25*1000=25000.