document.write( "Question 940239: 5x+y=9
\n" ); document.write( "10x−7y=−18\r
\n" ); document.write( "\n" ); document.write( "Solve by elimination \n" ); document.write( "

Algebra.Com's Answer #573032 by stanbon(75887) $\"\"$ $\"About$

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5x+y=9
\n" ); document.write( " 10x−7y=−18
\n" ); document.write( "Solve by elimination
\n" ); document.write( "------
\n" ); document.write( "Modify to get:
\n" ); document.write( "10x + 2y = 18
\n" ); document.write( "10x - 7y = -18
\n" ); document.write( "-----
\n" ); document.write( "Subtract and solve for \"y\"::
\n" ); document.write( "9y = 36
\n" ); document.write( "y = 4
\n" ); document.write( "----
\n" ); document.write( "solve for \"x\"::
\n" ); document.write( "5x + y = 9
\n" ); document.write( "------
\n" ); document.write( "5x + 4 = 9
\n" ); document.write( "5x = 5
\n" ); document.write( "x = 1
\n" ); document.write( "--------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "---------- \n" ); document.write( "

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