document.write( "Question 257175: What's the answer for :\r
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document.write( "3x + y = 1
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document.write( "x - 2y = 5 \n" );
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Algebra.Com's Answer #189278 by unlockmath(1688)![]() ![]() You can put this solution on YOUR website! Hello, \n" ); document.write( "Let's start by multiplying the first equation by 2: \n" ); document.write( "6x + 2y = 2 \n" ); document.write( "x - 2y = 5 \n" ); document.write( "Now we can add these to get: \n" ); document.write( "7x=7 Divide both sides by 7 will be: \n" ); document.write( "x=1 \n" ); document.write( "Plug in 1 into the first equation and we get: \n" ); document.write( "6+2y=2 Subtract 6 from both sides: \n" ); document.write( "2y=-4 Divide by 2: \n" ); document.write( "y=-2 \n" ); document.write( "There we go the answers are x=1 and y=-2 \n" ); document.write( "Plug these into both equations and see what happens. \n" ); document.write( "Make sense? \n" ); document.write( "RJ \n" ); document.write( "Check out a new book at: \n" ); document.write( "www.math-unlock.com \n" ); document.write( " |