document.write( "Question 179552: Don was setting up two aquariums in his new office.At the pet store,salt water fish were priced ar $2 each and fresh water fish were priced at $3 each.He bought some of each kind and paid $31 for a total of 13 fish.How many freah water fish did he buy? \n" ); document.write( "
Algebra.Com's Answer #134492 by nerdybill(7384)\"\" \"About 
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Let x = fresh water fish bought
\n" ); document.write( "then
\n" ); document.write( "13-x = salt water fish bought
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\n" ); document.write( "3x + 2(13-x) = 31
\n" ); document.write( "3x + 26 - 2x = 31
\n" ); document.write( "x + 26 = 31
\n" ); document.write( "x = 5
\n" ); document.write( "He bought 5 fresh water fishes.
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