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Romannatalia2009
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8) Aflati x numar natural, astfel incat 3/2x-1=7/21​

Răspuns :

BiancaRebeca

[tex] \frac{3}{2x - 1} = \frac{7}{21} [/tex]

(2x-1)×7=3×21

14x-7=63 /+7

14x=70 /÷14

[tex]\color{purple}\huge\boxed{\boxed{x=5}}[/tex]

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