document.write( "Question 181570: using elimination
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document.write( "4x-3y=-2
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document.write( " 6x+4y=31 \n" );
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Algebra.Com's Answer #136161 by solver91311(24713)![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply the first equation by 4, then multiply the second equation by 3. That will make the coefficients on y in the two equations additive inverses.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Next, add the two equations term by term to eliminate (hence the name of the method) the y variable, leaving you a single equation in x that can be solved by ordinary algebraic means.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Once you have determined the value of x, substitute that value into either of the original equations and then solve the resulting single-variable equation in y.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The x and y values determined above will give you the coordinates of the ordered pair that represents the single element of the solution set to the system of equations.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Note: In the event that the elimination process results in a trivial identity, i.e. 0 = 0, then you have a system of two equations that represent the same straight line in \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "John \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |