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Calculati folosind factorul comun:a)95x43+52x129-52x34;
b)2000+2001x2002-2002x1999;
c)2003x2002-2002x2001-2x2001;
d)2002+2002-1999;
e)2753x997+2753x3;
f)53214x987+11x53214+2x53214