document.write( "Question 43850: Solve by any method. Assume a and b represent nonzero constants.\r
\n" ); document.write( "\n" ); document.write( "ax + by = 3\r
\n" ); document.write( "\n" ); document.write( "ax - by = 10
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Algebra.Com's Answer #28916 by adamchapman(301)\"\" \"About 
You can put this solution on YOUR website!
ax+by=3 ..1
\n" ); document.write( "ax-by=10 ..2
\n" ); document.write( "adding equations (..1) and (..2) together gives:
\n" ); document.write( "2ax=13 ..3
\n" ); document.write( "ax=13/2=6.5 ..4
\n" ); document.write( "substitute equation (..4) into (..1) to give:
\n" ); document.write( "6.5+by=3
\n" ); document.write( "by=-3.5\r
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\n" ); document.write( "\n" ); document.write( "I hope this helps.\r
\n" ); document.write( "\n" ); document.write( "P.S. I am trying to start my own mathematics homework help website. I would be extremely grateful if you would send me your feedback on my help to adam.chapman@student.manchester.ac.uk.
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