This isn't a homework question...just something I picked up on a finance book about dividends. Say you have something like this. $30.85 = X/$1.15 + X/($1.15)^2 How do I solve for x step by step? They give me an answer of $18.98 and if I sub that # into x I get 30.85. How do I do it the other way...algebraically? Thanks.