document.write( "Question 776115: How do you solve by using elimination with 2x-4y=28 4x=17-5y \n" ); document.write( "
Algebra.Com's Answer #473389 by MathTherapy(10552)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "How do you solve by using elimination with 2x-4y=28 4x=17-5y\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x - 4y = 28 ----- eq (i)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "4x + 5y = 17 ----- eq (ii)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It's easiest to multiply eq (i) by - 2, or 2 and then add, or subtract both equations to ELIMINATE the x-variable, and determine the y-value. Then substitute the y-value into any of the 2 equations and determine the value of x.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You could also multiply eq (i) by 5 and eq (ii) by 4 to ELIMINATE the y-variable, but this would entail a little bit more work. \n" ); document.write( " |