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xsupra3-x-3supra4=x+1supra6​

Răspuns :

⁴X/3 - ³(X-3)/4 = ²(X+1)/6

(4X-3X+9)/12=(2X+1)/12

4X-3X+9=2X+1 (9-1=2X-X)

8=X