document.write( "Question 1128170: A woman bought some large frames for $13 each and some small frames for $7 each at a closeout sale. If she bought 20 frames for $170,find how many of each type she bought. \n" ); document.write( "

Algebra.Com's Answer #744654 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = number of small frames she bought
\n" ); document.write( " $\"+20+-+x+\"$ = number of large frames
\n" ); document.write( "-------------------------------------------
\n" ); document.write( " $\"+13%2A%28+20+-+x+%29+%2B+7x+=+170+\"$
\n" ); document.write( " $\"+260+-+13x+%2B+7x+=+170+\"$
\n" ); document.write( " $\"+-13x+%2B+7x+=+-90+\"$
\n" ); document.write( " $\"+6x+=+90+\"$
\n" ); document.write( " $\"+x+=+15+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+20+-+x+=+5+\"$
\n" ); document.write( "She bought 15 small and 5 large frames
\n" ); document.write( "----------------------------------------------
\n" ); document.write( " $\"+13%2A5+%2B+7%2A15+=+170+\"$
\n" ); document.write( " $\"+65+%2B+105+=+170+\"$
\n" ); document.write( " $\"+170+=+170+\"$
\n" ); document.write( "OK \n" ); document.write( "

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