How can I obtain the transfer function of system Y(s)/ X(s), which has the differential equation below ?

d^3/dt^3 + 3(d^2*y/dt^2) +5(dy/dt) + y = d^3*x/dt^3 + 4(d^2* x/dt^2) + 6(dx/dt) + 8x

If possible give me a tip to insert special characters here, as pi and division sign with a number over the other