document.write( "Question 123709This question is from textbook McDougal Littell Algebra 1
\n" ); document.write( ": I am supposed to solve the following linear system using linear combinations. Please help me to solve this problem. I have done the following work to the problem so far:\r
\n" ); document.write( "\n" ); document.write( "5e + 4f = 9 *The two equations on the left are the original linear system.
\n" ); document.write( "4e + 5f = 9\r
\n" ); document.write( "\n" ); document.write( "20e + 16f = 36
\n" ); document.write( "+ (-20e)- 25f = -36
\n" ); document.write( "________________
\n" ); document.write( "-9f= 0
\n" ); document.write( "f=0\r
\n" ); document.write( "\n" ); document.write( "5e+4*0= 9
\n" ); document.write( "5e+0= 9
\n" ); document.write( "e=1.8\r
\n" ); document.write( "\n" ); document.write( "However, when I substituted these two solutions to the variables e and f, the second equation-----> 4e + 5f = 9----- was not true. Please help me to achieve the correct answer.
\n" ); document.write( "Much appreciated, Megan B. \n" ); document.write( "

Algebra.Com's Answer #90761 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%28-20e%29-+25f+=+highlight%28-36%29\"$
\n" ); document.write( "The (-36) is incorrect. It should be 9*(-5) or -45.
\n" ); document.write( "Make that correction and try it.
\n" ); document.write( "It should work. \n" ); document.write( "

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