document.write( "Question 1036667: This is my equation:
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document.write( "3x - 7y = 2
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document.write( "2x - 3y = 3
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document.write( "I need to use elimination, please help.
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Algebra.Com's Answer #651404 by ikleyn(52795)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "This is my equation: \n" ); document.write( "3x - 7y = 2 \n" ); document.write( "2x - 3y = 3 \n" ); document.write( "I need to use elimination, please help. \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "3x - 7y = 2, (1)\r\n" ); document.write( "2x - 3y = 3. (2)\r\n" ); document.write( "\r\n" ); document.write( "Multiply eq.(1) by 3 (both sides) and multiply eq.(2) by 7. You will get\r\n" ); document.write( "\r\n" ); document.write( " 9x - 21y = 6, (3)\r\n" ); document.write( "14x - 21y = 21. (4)\r\n" ); document.write( "\r\n" ); document.write( "Now distract eq.(3) from eq.(4). The terms with \"y\" will canceled (eliminated), and you will get a single equation for \"x\":\r\n" ); document.write( "\r\n" ); document.write( "14x - 9x = 21 - 6, or\r\n" ); document.write( "\r\n" ); document.write( "5x = 15 ---> x =\r \n" ); document.write( "\n" ); document.write( "On the Substitution method, Elimination method, Determinants' method for solving the systems of two linear equations in two unknowns see the lessons \r \n" ); document.write( "\n" ); document.write( " - Solution of the linear system of two equations in two unknowns using determinant \r \n" ); document.write( "\n" ); document.write( " - Solution of the linear system of two equations in two unknowns by the Substitution method \r \n" ); document.write( "\n" ); document.write( " - Solution of the linear system of two equations in two unknowns by the Elimination method \r \n" ); document.write( "\n" ); document.write( " - Geometric interpretation of the linear system of two equations in two unknowns \r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |