document.write( "Question 1056570: Use elimination to solve each system of equations. I have to show all work and write the answer as an (x,y) ordered.
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document.write( "5x-2y=-10
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document.write( "3x+6y=66 \n" );
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Algebra.Com's Answer #671674 by ikleyn(52797)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "Use elimination to solve each system of equations. I have to show all work and write the answer as an (x,y) ordered. \n" ); document.write( "5x-2y=-10 \n" ); document.write( "3x+6y=66 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "5x - 2y = -10, (1)\r\n" ); document.write( "3x + 6y = 66. (2)\r\n" ); document.write( "\r\n" ); document.write( "Multiply equation (1) by 3 (both sides). You will get\r\n" ); document.write( "\r\n" ); document.write( "15x - 6y = -30, (1')\r\n" ); document.write( " 3x + 6y = 66. (2')\r\n" ); document.write( "\r\n" ); document.write( "Add the equations (1') and (2'). By doing this way, you eliminate \"y\" and get a single equation for \"x\":\r\n" ); document.write( "\r\n" ); document.write( "18x = 66 - 30,\r\n" ); document.write( "\r\n" ); document.write( "18x = 36,\r\n" ); document.write( "\r\n" ); document.write( "x =\r \n" ); document.write( "\n" ); document.write( "On Elimination method see the lesson\r \n" ); document.write( "\n" ); document.write( " - Solution of a linear system of two equations in two unknowns by the Elimination method \r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |