document.write( "Question 316676: In the following system of equations, what does x equal?
\n" ); document.write( "8x + 5y = 5
\n" ); document.write( "3x + 3y = 9
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Algebra.Com's Answer #226594 by nyc_function(2741)\"\" \"About 
You can put this solution on YOUR website!
Solve one of the equations for y and then plug the value you found for y into the other equation to find the value of x.\r
\n" ); document.write( "\n" ); document.write( "8x + 5y = 5\r
\n" ); document.write( "\n" ); document.write( "5y = -8x + 5\r
\n" ); document.write( "\n" ); document.write( "y = (-8x/5) + 5/5\r
\n" ); document.write( "\n" ); document.write( "y = (-8x/5) + 1\r
\n" ); document.write( "\n" ); document.write( "We plug (-8x/5) + 1 for y in the other equation and solve for x.\r
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\n" ); document.write( "\n" ); document.write( "3x + 3y = 9\r
\n" ); document.write( "\n" ); document.write( "3x + 3(-8x/5) + 1) = 9\r
\n" ); document.write( "\n" ); document.write( "3x - (24x/5) + 3 = 9\r
\n" ); document.write( "\n" ); document.write( "15x - 24x + 15 = 45\r
\n" ); document.write( "\n" ); document.write( "-9x = 45 - 15\r
\n" ); document.write( "\n" ); document.write( "-9x = 30\r
\n" ); document.write( "\n" ); document.write( "x = 30/-9\r
\n" ); document.write( "\n" ); document.write( "x = -30/9\r
\n" ); document.write( "\n" ); document.write( "x = -10/3\r
\n" ); document.write( "\n" ); document.write( "Done!
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