document.write( "Question 937865: Hello.
\n" ); document.write( "Can someone please help me with this series problem.\r
\n" ); document.write( "\n" ); document.write( "I need to find \"a%5B1%5D+\" and \"d+\"
\n" ); document.write( "Given:
\n" ); document.write( "\"a%5B7%5D=49\" and \"a%5B3%5D+%2B+a%5B9%5D+=+82+\"\r
\n" ); document.write( "\n" ); document.write( "Thank you.
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Algebra.Com's Answer #571284 by josgarithmetic(39630)\"\" \"About 
You can put this solution on YOUR website!
Symbolism suggests Arithmetic Sequence, with \"a%5B1%5D\" as the first term, a common difference d, and general term \"a%5Bn%5D=a%5B1%5D%2B%28n-1%29d\".\r
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\n" ); document.write( "\n" ); document.write( "Use the formula to rewrite your given equations.\r
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\n" ); document.write( "\n" ); document.write( "\"a%5B1%5D%2B%287-1%29d=7\" and \"a%5B1%5D%2B%283-2%29d%2Ba%5B1%5D%2B%289-1%29d=82\".\r
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\n" ); document.write( "\n" ); document.write( "Simplify and solve the system.
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