document.write( "Question 579932: When using the addition method, I don't understand how to solve this problem:
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document.write( "4x+5/2y=11
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document.write( "3x-4/3y= -11\r
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document.write( "I did what my textbook suggested and tried to eliminate fractions, but ended up with something even more difficult:
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document.write( "24x+15y=11
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document.write( "18x-8y= -11\r
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document.write( "Please help I'm not sure what I should do!\r
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document.write( "Christina \n" );
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Algebra.Com's Answer #371103 by mananth(16946)![]() ![]() You can put this solution on YOUR website! (4x+5)/2y=11\r \n" ); document.write( "\n" ); document.write( "multipluy by 2y\r \n" ); document.write( "\n" ); document.write( "4x+5 = 22y\r \n" ); document.write( "\n" ); document.write( "4x-22y=-5.....................(1)\r \n" ); document.write( "\n" ); document.write( "(3x-4)/3y= -11 \n" ); document.write( "multiply by 3y\r \n" ); document.write( "\n" ); document.write( "3x-4 = -33y \n" ); document.write( "3x+33y=4.......................(2)\r \n" ); document.write( "\n" ); document.write( "4 x -22 y = -5 .............1 \n" ); document.write( "3 x + 33 y = 4 .............2 \n" ); document.write( "Eliminate y \n" ); document.write( "multiply (1)by 3 \n" ); document.write( "Multiply (2) by 2 \n" ); document.write( "12 x -66 y = -15 \n" ); document.write( "6 x + 66 y = 8 \n" ); document.write( "Add the two equations \n" ); document.write( "18 x = -7 \n" ); document.write( "/ 18 \n" ); document.write( "x = - 7/18 \n" ); document.write( "plug value of x in (1) \n" ); document.write( "4 x -22 y = -5 \n" ); document.write( "-14/9 -22 y = -5 \n" ); document.write( " -22 y = -5 -14/ 9 \n" ); document.write( " -22 y = -59/ 9 \n" ); document.write( " y = 14/47 \n" ); document.write( " \n" ); document.write( " |