For the differentiable function \( f:\mathbb{R}-\{0\}\to \mathbb{R} \), let \( 3f(x)+2f\!\left(\dfrac{1}{x}\right)=\dfrac{1}{x}-10 \), then \( \left|\,f(3)+f'\!\left(\dfrac{1}{4}\right)\,\right| \) is equal to:
\( \dfrac{33}{5} \)
\( 13 \)
\( 7 \)
\( \frac{29}{5} \)