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Ajutatima va rog frumos 3y-9-12y=17-22y

Răspuns :

3y-9-12y=17-22y
-9y-9=17-22y
-9y+22y=17+9
13y=26
y=26:13
y=2
[tex]3y-9-12y=17-22y \\ y(3+22-12)=17+9 \\ 13y=26 \\ y=2[/tex]