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efectuati folosind factorul comun:
a)14*12-14*7-5*13=
b)7*49+7*31-7*50=
c)32*25+32*11-36*30=


Răspuns :

a) 14x(12-7)-5x13=
b) 7x(49+31-50)=
c) 32x(25+11)-36x30