document.write( "Question 907189: I am trying solve by graphing but my calculations are wrong. Can you help me?
\n" ); document.write( "5x-3y=15
\n" ); document.write( "2x-y=4\r
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Algebra.Com's Answer #550180 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1) $\"+5x+-+3y+=+15+\"$
\n" ); document.write( "(2) $\"+2x+-+y+=+4+\"$
\n" ); document.write( "-------------------
\n" ); document.write( " $\"+3y+=+5x+-+15+\"$
\n" ); document.write( "(1) $\"+y+=+%285%2F3%29%2Ax+-+5+\"$
\n" ); document.write( "-------------------
\n" ); document.write( "(2) $\"+y+=+2x+-+4+\"$
\n" ); document.write( "-----------------
\n" ); document.write( "Here are the plots:
\n" ); document.write( " $\"+graph%28+400%2C+400%2C+-10%2C+5%2C+-15%2C+5%2C+%285%2F3%29%2Ax+-+5%2C+2x+-+4+%29+\"$
\n" ); document.write( "My guess for the solution
\n" ); document.write( "is ( -3, -10 )
\n" ); document.write( "-------------
\n" ); document.write( "check:
\n" ); document.write( "Multiply both sides of (2) by $\"+3+\"$
\n" ); document.write( "and subtract (2) from (1)
\n" ); document.write( "(1) $\"+5x+-+3y+=+15+\"$
\n" ); document.write( "(2) $\"+-6x+%2B+3y+=+-12+\"$
\n" ); document.write( "-----------------------
\n" ); document.write( " $\"+-x+=+3+\"$
\n" ); document.write( " $\"+x+=+-3+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+5x+-+3y+=+15+\"$
\n" ); document.write( "(1) $\"+5%2A%28-3%29+-+3y+=+15+\"$
\n" ); document.write( "(1) $\"+-15+-+3y+=+15+\"$
\n" ); document.write( "(1) $\"+3y+=+-30+\"$
\n" ); document.write( "(1) $\"+y+=+-10+\"$
\n" ); document.write( "( -3, -10 )
\n" ); document.write( "OK\r
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