Hello, I'm just wondering if there's a better way to solve systems such as these: variables are x,y,z,a and I need to solve for x, y, and z. y^2z^3 + a4x=0 2xyz^3 + a6y = 0 3xy^2z^2 + a12z = 0 2x^2 +3y^2 + 6z^2 -6 = 0 I'm aware of matrix methods to solve systems of linear equations. But for those you nead to have linear equations, correct? And here my variables are multiplied together and to higher powers. I was thinking of definine something like y^2z^3 = b or something and just calling those terms variables, and then creating the necessary new equations. But I don't know, that seems like a lot of work. Anyway, is there any other way to solve such systems other than back elimination of varibales and back substitution? because I have to do something like this on an exam and that method takes a lot of time, and I always make mistakes. what algorithm (if any) do you use to solve a simlar system?? thanks for your help.