Hi everyone!

  I have something I would like maple to compute for me, but I am not sure how to enter it.  Here is the situation:

I have 4 equations with 5 unknowns.  I would like maple to solve for 4 of the unknowns.  Eventually I need 1 unknown in terms of just one other unknown.  An example would be

0=a₀+a₁+2a₂                     eq(1)