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Dacă
[tex] \frac{2x + 1}{ x + 4} = \frac{3}{2} [/tex]
x = ...


Răspuns :

[tex]\frac{2x+1}{x+4} =\frac{3}{2} \\ \\ 2(2x+1)=3(x+4)\\ \\ 4x+2=3x+12\\ \\ 4x-3x=12-2\\ \\ x=10[/tex]