document.write( "Question 270859: solve for x and y for the following equations using elimination method:
\n" ); document.write( "0.5x + 2y = 9
\n" ); document.write( "4x - 15y = 2 \n" ); document.write( "

Algebra.Com's Answer #198342 by JBarnum(2146) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\".5x%2B2y=9\"$ multiply this equation by -8 to solve for y
\n" ); document.write( " $\"4x-15y=2\"$
\n" ); document.write( "______________
\n" ); document.write( " $\".5x%28-8%29%2B2%28-8%29y=9%28-8%29\"$
\n" ); document.write( " $\"4x-15y=2\"$
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\n" ); document.write( " $\"-4x-16y=-72\"$
\n" ); document.write( " $\"4x-15y=2\"$ add together
\n" ); document.write( "______________
\n" ); document.write( " $\"-31y=-70\"$
\n" ); document.write( " $\"highlight%28y=70%2F31%29\"$
\n" ); document.write( "______________
\n" ); document.write( " $\".5x%2B2y=9\"$
\n" ); document.write( " $\"x%2B4y=18\"$
\n" ); document.write( " $\"x=18-4y\"$
\n" ); document.write( " $\"x=18-4%2870%2F31%29\"$
\n" ); document.write( " $\"x=%28558%2F31%29-%28280%2F31%29\"$
\n" ); document.write( " $\"highlight%28x=278%2F31%29\"$
\n" ); document.write( " \n" ); document.write( "

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