document.write( "Question 373268: I need to solve this linear equation:
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document.write( "2/3x-1/4y=11/-3
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document.write( "1/3x+3/5y=16/15 \r
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document.write( "The solution is (-4,4). I just don't know the steps to solving it.
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document.write( "Can you please help me with the steps? \n" );
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Algebra.Com's Answer #265719 by unlockmath(1688)![]() ![]() You can put this solution on YOUR website! Hello, There's a couple ways to attack this problem. \n" ); document.write( "2/3x-1/4y=11/-3 \n" ); document.write( "1/3x+3/5y=16/15 \n" ); document.write( "Let's multiply the second equation by -2 to get: \n" ); document.write( "-2/3x-6/5y=-32/15 \n" ); document.write( "Now add this to the first to get (note, we need to change the fractions to same denominator): \n" ); document.write( "-29/20y=-87/15 \n" ); document.write( "Let's get rid of the fractions by multiplying by 60: \n" ); document.write( "-87y=-348 \n" ); document.write( "Divide both sides by -87 to get: \n" ); document.write( "y=4 \n" ); document.write( "Now plug this into either equation and we end up with: \n" ); document.write( "x=-4 \n" ); document.write( "Make sense? \n" ); document.write( "RJ \n" ); document.write( "www.math-unlock.com \n" ); document.write( " |