document.write( "Question 1008285: Solve each system by elimination.\r
\n" ); document.write( "\n" ); document.write( "1) 10x - 8y = 16
\n" ); document.write( "20x - y = 2\r
\n" ); document.write( "\n" ); document.write( "2) -2x + 5y = 29
\n" ); document.write( "-2x + 2y = 20\r
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Algebra.Com's Answer #624022 by ikleyn(52803) $\"\"$ $\"About$

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\n" ); document.write( "Solve each system by elimination. \r
\n" ); document.write( "\n" ); document.write( "1) 10x - 8y = 16
\n" ); document.write( "20x - y = 2 \r
\n" ); document.write( "\n" ); document.write( "2) -2x + 5y = 29
\n" ); document.write( "-2x + 2y = 20
\n" ); document.write( "-----------------------------------------\r
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document.write( "1) \r\n" );
document.write( "10x - 8y = 16  (1)\r\n" );
document.write( "20x - y = 2    (2)\r\n" );
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document.write( "Multiply the equation (1) by 2 (both sides) and then distract it from (2). In this way you eliminate y \r\n" );
document.write( "and get one single equation for x:\r\n" );
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document.write( "-y - (-16)y = 2 - 32,\r\n" );
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document.write( "15y = -30,\r\n" );
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document.write( "y =  = -2.\r\n" );
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document.write( "Then find x from (2): 20x = y + 2 = -2 + 2 = 0, x = 0. \r\n" );
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document.write( "2)\r\n" );
document.write( "-2x + 5y = 29   (1)\r\n" );
document.write( "-2x + 2y = 20   (2)\r\n" );
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document.write( "Distract (2) from (1) and do the rest yourself.\r\n" );
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