5. In the interval $[0, \pi)$, the number of solutions to the equation $\sin 12 x=x$ is
Draw the graphs of $y=\sin 12 x$ and $y=x$ in the same coordinate system. Since the smallest positive period of the function $y=\sin 12 x$ is $T=\frac{\pi}{6}$, and $\frac{\pi}{3}>1$, the number of solutions to the equation $\sin 12 x=x$ in the interval $[0, \pi)$ is 4.