document.write( "Question 772399: x=5y
\n" ); document.write( "3x-4y=11
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Algebra.Com's Answer #470836 by Tatiana_Stebko(1539) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"system%28x=5y%2C3x-4y=11%29\"$
\n" ); document.write( "Substitute $\"x=5y\"$ into the second equation
\n" ); document.write( " $\"3%2A5y-4y=11\"$
\n" ); document.write( " $\"15y-4y=11\"$
\n" ); document.write( " $\"11y=11\"$ divide by 11
\n" ); document.write( " $\"y=1\"$
\n" ); document.write( "substitute $\"y=1\"$ into $\"x=5y\"$
\n" ); document.write( " $\"x=5%2A1=5\"$
\n" ); document.write( " $\"system%28x=5%2C+y=1%29\"$
\n" ); document.write( "Check the answer
\n" ); document.write( " $\"system%285=5%2A1%2C3%2A5-4%2A1=11%29\"$
\n" ); document.write( " $\"system%285=5%2C11=11%29\"$ - correct
\n" ); document.write( "Answer (5, 1) \n" ); document.write( "

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