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Teusor
a fost răspuns

cum pot rezolva urmat exercitiul
5+{55-(5+5(n-5+5)]}+(55:5-5:5)=55

Răspuns :

5+{55-[5+5(n-5+5)]}+(55:5-5:5)=55
5+{55-[5+5*n]}+(11-1)=55
5+{55-5-5n}+10=55
5+50-5n+10=55
5+50+10-55=5n
10=5n
sau
5*n=10
n=10:5
n=2
S={2}

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