Find a one parameter family of solutions of the following first order ordinary differential equation

$(3{x}^{2}+9xy+5{y}^{2})dx-(6{x}^{2}+4xy)dy=0$

Hello. So I am stuck after I find out that they are not exact. Please help.

$(3{x}^{2}+9xy+5{y}^{2})dx-(6{x}^{2}+4xy)dy=0$

Hello. So I am stuck after I find out that they are not exact. Please help.