Verified answer

Resposta:

[tex]x = \frac{2}{9} [/tex]

Explicação passo-a-passo:

[tex] \frac{ \frac{3}{4} }{ \frac{1}{3} } = \frac{ \frac{1}{2} }{x} \\ \frac{3}{4} \times \frac{3}{1} = \frac{1}{2} \times \frac{1}{x} \\ \frac{9}{4} = \frac{1}{2x} \\ 18x = 4 \\ x = \frac{4}{18} \\ x = \frac{2}{9} [/tex]