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×+2/3-2x+3/6+3=2x+3/6+12/3=?



Răspuns :

aducem la acelasi numitor

6x+6-12x+3+18=12x+3+24

-6x +27 =12x +27

-6x-12x =27-27

-18x=0  ⇒x=0