Question

X-3 = X QUAL A RESPOSTA PFV
4 6

Answer 1

Olá.

Vamos aos cálculos:
$\mathsf{\dfrac{x}{4}-\dfrac{3}{6}=x}\\\\\\ \mathsf{\dfrac{6\cdot x-4\cdot3}{24}=x}\\\\\\ \mathsf{\dfrac{6x-12}{24}=x}\\\\\\ \mathsf{6x-12=24\cdot x}\\\\ \mathsf{6x-12=24x}\\\\ \mathsf{6x-24x=12}\\\\ \mathsf{-18x=12\cdot(-1)}\\\\ \mathsf{18x=-12}\\\\ \mathsf{x=\dfrac{12}{18}}$

Podemos simplificar, dividindo por 6.
$\mathsf{x=\left(\dfrac{12}{18}\right)^{:6}}\\\\\\ \Large\boxed{\mathsf{x=\dfrac{2}{3}=0,\overline{666}}}$

Qualquer dúvida, deixe nos comentários.
Bons estudos.