document.write( "Question 1084745: 4x-y= -1
\n" ); document.write( "2x+4y=13 \n" ); document.write( "
Algebra.Com's Answer #698844 by skerry(1)\"\" \"About 
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4x-y = -1 ...................... equation(1)
\n" ); document.write( "2x+4y = 13 .......................equation(2)
\n" ); document.write( "to apply the elimination method you multiply equation 2 by 2.
\n" ); document.write( "4x+8y = 26 .......................equation(3)
\n" ); document.write( "adding equation 1 and 3 in order to eliminate x you have:
\n" ); document.write( "4x-y = -1....................(1)
\n" ); document.write( "4x+8y = 26....................(3)
\n" ); document.write( "equation. (1) + (3)
\n" ); document.write( "-9y = -27
\n" ); document.write( "divide both sides by -9
\n" ); document.write( "therefore y = 3
\n" ); document.write( "replace y as 3 in equation. (1)
\n" ); document.write( "4x- 3= -1
\n" ); document.write( "4x = 3-1
\n" ); document.write( "4x = 2
\n" ); document.write( "divide both sides by 4 to x = 1/2
\n" ); document.write( "therefore y = 3 and x = 1/2 (Answer)\r
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