document.write( "Question 1035326: I need help solving this matrice problem dealing with systems.\r
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document.write( "2x+4y=2
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document.write( "-3x+y=11\r
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document.write( "This is what I have so far.\r
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document.write( " 2 4 2
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document.write( "-3 1 11\r
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document.write( "I multiplied the first row by 1/2 to get 1 in place of the 2 in first row.\r
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document.write( "So then I need to get a 0 at the bottom of the first column. I multiplied -3 by the first row and got -3 -6 and -3. I added the product here to the bottom row. This is where I think I got lost. In the original system there is a 1 on the bottom row second column. When I added the product I got -2, so I'm not sure from here how to finish solving. \n" );
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Algebra.Com's Answer #650005 by ikleyn(52790)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "I need help solving this matrix problem dealing with systems.\r \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "2x+4y=2\r\n" ); document.write( "-3x+y=11\r\n" ); document.write( "\r\n" ); document.write( "This is what I have so far.\r\n" ); document.write( "\r\n" ); document.write( " 2 4 2\r\n" ); document.write( "-3 1 11\r\n" ); document.write( "\r\n" ); document.write( "I multiplied the first row by 1/2 to get 1 in place of the 2 in first row. -Correct.\r\n" ); document.write( "\r\n" ); document.write( "So then I need to get a 0 at the bottom of the first column. - Correct\r\n" ); document.write( "\r\n" ); document.write( "I multiplied -3 by the first row and got -3 -6 and -3. - Incorrect. Multiply by \"3\" (instead of \"-3\") \r\n" ); document.write( " and then add. You will be on the right track. \r\n" ); document.write( "\r\n" ); document.write( "I added the product here to the bottom row. This is where I think I got lost. \r\n" ); document.write( "\r\n" ); document.write( "In the original system there is a 1 on the bottom row second column. \r\n" ); document.write( "\r\n" ); document.write( "When I added the product I got -2, so I'm not sure from here \r\n" ); document.write( "how to finish solving?\r\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |