document.write( "Question 145021: I need help with 2 homework problems. I can use any method (elimination, subtitution or graphical methods) the problems are 5x + 6y = 14
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document.write( " -3y + x = 7 I got (35/12, -7/12)\r
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document.write( "next problem 2x/3 + 3y/4 = 11/12\r
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document.write( " x/3 + 7y/18 = 1/2
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document.write( "(I got (8/5, -3/35) \n" );
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Algebra.Com's Answer #105728 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 5x + 6y = 14 \n" ); document.write( "-3y + x = 7 \n" ); document.write( "------------ \n" ); document.write( "5x + 6y = 14 \n" ); document.write( " x - 3y = 7 \n" ); document.write( "------------ \n" ); document.write( "5x + 6y = 14 \n" ); document.write( "2x - 6y = 14 \n" ); document.write( "Add the 2 eqns \n" ); document.write( "7x + 0y = 28 \n" ); document.write( "x = 4 \n" ); document.write( "y = -1 \n" ); document.write( "2nd set \n" ); document.write( "2x/3 + 3y/4 = 11/12 \n" ); document.write( "x/3 + 7y/18 = 1/2 \n" ); document.write( "----------------- \n" ); document.write( "Mult eqn 1 by 12, eqn 2 by 18 to eliminate fractions \n" ); document.write( "8x + 9y = 11 \n" ); document.write( "6x + 7y = 9 \n" ); document.write( "------------ Mult eqn 1 by 3 and eqn 2 by 4 to get 24x in order to eliminate \n" ); document.write( "24x + 27y = 33 \n" ); document.write( "24x + 28y = 36 \n" ); document.write( "Subtract 2 from 1 \n" ); document.write( "0x -y = -3 \n" ); document.write( "y = 3 \n" ); document.write( "Sub, and get x = -2\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |