# Can anyone solve my PDE equation?

i have this 2 equation to be solved, can someone help me with it please?
1- let m= m(x;y;z)
solve2((d^3/dx^3)+3(d/dx)(d^2/dy^2)-(d/dx)(d/dy))*m(x;y;z)=0

2-let m=m(x;y;z) solve (ydx+ydz)*m=m