document.write( "Question 271707: solve by elimmination method
\n" ); document.write( "6x - 9y = 25.5
\n" ); document.write( "7y - 2x = -10.5
\n" ); document.write( "

Algebra.Com's Answer #198888 by Tobiasz(54)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "6x - 9y = 25.5
\n" ); document.write( "2x - 7y = -10.5\r
\n" ); document.write( "\n" ); document.write( "Lets Find y\r
\n" ); document.write( "\n" ); document.write( " 6x - 9y = 25.5
\n" ); document.write( "-3(2x - 7y = -10.5)\r
\n" ); document.write( "\n" ); document.write( "6x - 9y = 25.5
\n" ); document.write( "6x + 21y = 10.5\r
\n" ); document.write( "\n" ); document.write( "30y = 36\r
\n" ); document.write( "\n" ); document.write( "Divide by 30 \r
\n" ); document.write( "\n" ); document.write( "\"y+=+1.2\"\r
\n" ); document.write( "\n" ); document.write( "OK lets plug this in. to find x.\r
\n" ); document.write( "\n" ); document.write( "2x - 7y = -10.5\r
\n" ); document.write( "\n" ); document.write( "2x - 7(1.2)= -10.5\r
\n" ); document.write( "\n" ); document.write( "2x - 8.4 = -10.5\r
\n" ); document.write( "\n" ); document.write( "add 8.4 to 8.4 and -10.5\r
\n" ); document.write( "\n" ); document.write( "2x = -2.1\r
\n" ); document.write( "\n" ); document.write( "divide by 2 to both sides\r
\n" ); document.write( "\n" ); document.write( "\"x+=+-1.05\"\r
\n" ); document.write( "\n" ); document.write( "Lets check if it works!! =]\r
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\n" ); document.write( "\n" ); document.write( "2x - 7y = 10.5 \r
\n" ); document.write( "\n" ); document.write( "2( -1.05) - 7 ( 1.2) = -10.5\r
\n" ); document.write( "\n" ); document.write( "-2.1 - 8.4 = -10.5\r
\n" ); document.write( "\n" ); document.write( "-10.5 = -10.5\r
\n" ); document.write( "\n" ); document.write( "It works! Cya\r
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\n" ); document.write( "\n" ); document.write( "Any more questions: send them to tobiasz.chris@gmail.com\r
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