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a+b+c=66,a+b=33,b+c=55,a,b,c=?




Răspuns :

a+b+c=66
a+b=33
b+c=55
a=66-55=11
b=33-11=22
c=55-22=33
inlocuiesti a+b in prima relatie si da :33+ c=66|-33
c=33
b+c=55 => b=22
a+b=33 => a=11