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Andreipurusniuc
a fost răspuns

Rezolvati ecuatia : 5·(10X-1)=9·(5X+1)+1

Răspuns :

Anaiulia2005
5(10x-1)=9(5x+1)+1
50x-5=45x+9+1
50x-45x=10+5
5x=15
x=15/5
x=3