I believe it's very unlikely that you could solve this system symbolically... I may be mistaken but see:
If you take the equation 1 and solve for “x0” you have a very large solutions (which should be subsequently equated with the equation 2, also solved to “x0”, to then solve a definitive “x1” equation). Look at equation 1 solved for "x0":
Solve[p1*a1*(-x0 + (e1b + e1l - x1)*a1)^(-2) +
p2*a2*((e1b + e1l - x1)*a2)^(-2) == (w0l +
x0*P00 - (e1b - x1)*P01)^(-2)*P01, {x0}] // InputForm
If you observe this solution in Word with Arial font and size 9, you will see that it gives 119 pages only to the symbolic solution of equation 1 for "x0":
Then you would still have to isolate the “x0” in equation 2 to match these solutions and solve an even more complex equation later...!
You may solve this system if you have fewer variables and more numeric values in some (many) of the positions... At least that's what I believe...