document.write( "Question 1077413: What number would you multiply by the first equation and the second equation to solve the following system by addition, eliminating y? (Do not finish solving the system)
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document.write( "{2x+3y=-8, 5x+4y=12 \n" );
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Algebra.Com's Answer #691875 by ikleyn(52803)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "Multiply first equation by 5, the second equation by 2.\r\n" ); document.write( "Then subtract the second from the first.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "In this way you eliminate \"x\".\r\n" ); document.write( "\r\n" ); document.write( "Then solve for \"y\".\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "After finding \"y\", substitute it into either of the two given equations to find \"x\".\r\n" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "On the Substitution method, Elimination method, Determinants' method for solving the systems of two linear equations \n" ); document.write( "in two unknowns see the lessons \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( " - Solution of the linear system of two equations in two unknowns using determinant \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( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r \n" ); document.write( "\n" ); document.write( " - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Systems of two linear equations in two unknowns\".\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |