Reply To: letter sign

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Nemeth: (no UEB)

Question - if you had:

  1. Subtract ab from both sides.  Would you  have ab with a letter indicator in front of the a?
  2. How can you isolate w?  Would the w have a letter sign or no?
  3.  You can rewrite the right side as two terms, c = xaaba,.... etc.  Is there a letter sign in front of the c or no?

I know this is probably a basic question but I just want solid clarification on it.  I think I find an answer but then I'm not sure.  Thank you!