Question 1009493
You can differentiate implicitly,
{{{3u^2(du/dt)+2v(dv/dt)=u(dv/dt)+v(du/dt)}}}
{{{(du/dt)(3u^2-v)=(dv/dt)(u-2v)}}}
{{{du/dt=(dv/dt)((u-2v)/(3u^2-v))}}}