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Se dau numerele:a=9, b=63:9, c=5x5.Afla:(c+c)x9-7; 10c-9b+(c+axb).Dau coroana!!

Răspuns :

a=9
b=63:9=7
c=5*5=25
(c+c)*9-7=(25+25)*9-7=50*9-7=450-7=443
10c-9b+(c+a*b)=10*25-9*7+(25+9*7)=250-63+(25+63)=187+88=275