# Simplify expressions

Hi, I've got this long equation:

F_zr == (F_xc*p_fcx*p_rcy*p_rcz + c_N_x*p_fcx*p_rcx - c_N_y*p_fcx*p_rcy+ (p_fcx*p_rcx - p_rcx^2)*F_yc*p_rcz + c_N_z*p_rcx*p_rcz - (F_xc*p_rcx*p_rcy*p_rcz + c_N_x*p_rcx^2 - c_N_y*p_rcx*p_rcy +c_N_z*p_rcx*p_rcz)*cos(delta(t)) - (F_yc*p_rcx*p_rcy*p_rcz -c_N_z*p_rcy*p_rcz)*sin(delta(t)))/((p_fcx*p_rcx -p_rcx^2)*p_rcy*cos(delta(t)) - (p_fcx^2 - p_fcx*p_rcx)*p_rcy)

I tried doing simplify_full() but the output is not simple at all. I read about using ._mathematica_().FullSimplify() but it says permission denied.

How can I really simplify it?

Thank you.