document.write( "Question 877854: 3x-y=10
\n" ); document.write( "4x+y=15 Find the common solution using elimination. \n" ); document.write( "

Algebra.Com's Answer #529651 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Add the two equations together to eliminate $\"y\"$
\n" ); document.write( " $\"3x-y%2B4x%2By=10%2B15\"$
\n" ); document.write( " $\"7x=25\"$
\n" ); document.write( " $\"x=25%2F7\"$
\n" ); document.write( "Then use either equation to solve for $\"y\"$
\n" ); document.write( " $\"4%2825%2F7%29%2By=15\"$
\n" ); document.write( " $\"y=105%2F7-100%2F7\"$
\n" ); document.write( " $\"y=5%2F7\"$
\n" ); document.write( " \n" ); document.write( "

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