document.write( "Question 248527: slove the following system of equations
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document.write( "x+5y=8
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document.write( "x+y=4 \n" );
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Algebra.Com's Answer #181124 by blwinbbbles(106)![]() ![]() You can put this solution on YOUR website! you have \r \n" ); document.write( "\n" ); document.write( "(1)x+5y=8 and \n" ); document.write( "(2)x+y=4\r \n" ); document.write( "\n" ); document.write( "you can use elimination:\r \n" ); document.write( "\n" ); document.write( "Multiple equation (2) by -1\r \n" ); document.write( "\n" ); document.write( "so now you have:\r \n" ); document.write( "\n" ); document.write( "(1) x+5y=8 \n" ); document.write( "(2) -x-y=-4\r \n" ); document.write( "\n" ); document.write( "add the equations and now you have\r \n" ); document.write( "\n" ); document.write( "4y=4 divide both sides by 4\r \n" ); document.write( "\n" ); document.write( "y=1\r \n" ); document.write( "\n" ); document.write( "You now know y so sub into original equation (1) \n" ); document.write( "x + 5(1) = 8 \n" ); document.write( "x+5=8 subtract 5 from both sides \n" ); document.write( "x=3\r \n" ); document.write( "\n" ); document.write( "your answer is (3,1)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |