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Aflati K ,stiind ca :2 supra 3 plus 4 supra trei plus 6 supra 3 plus.......2K supra 3 egal 14​

Răspuns :

[tex] \frac{2}{3} + \frac{4}{3} + \frac{6}{3} + \frac{2k}{3} = 14 \\ \frac{12 + 2k}{3} = 14 \\ 2k = 30 \\ k = 15[/tex]

2/3+4/3+6/3+2k/3=14/1

12+2k=42

2k=30

k=15