document.write( "Question 60133This question is from textbook Elementary and Intermediate Algebra
\n" ); document.write( ": To Whomever can assist, Thank you!
\n" ); document.write( "This has to do with the elimination by addition method and I'm unsure of how to solve for the system.\r
\n" ); document.write( "\n" ); document.write( "x - 2y = -12
\n" ); document.write( "2x + 9y = 2
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Algebra.Com's Answer #41284 by funmath(2933)\"\" \"About 
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E1: x - 2y = -12
\n" ); document.write( "E2: 2x + 9y = 2
\n" ); document.write( "Mutiply E1 by -2 and add E1+E2 and the x's will be eliminated leaving you able to solve for y.
\n" ); document.write( "E1: -2(x-2y)=-2(-12) ---> -2x+4y=24
\n" ); document.write( ":
\n" ); document.write( "-2x+4y=24
\n" ); document.write( "2x+9y=2
\n" ); document.write( "__________
\n" ); document.write( "0+13y=26
\n" ); document.write( "13y=26
\n" ); document.write( "13y/13=26/13
\n" ); document.write( "y=2
\n" ); document.write( ":
\n" ); document.write( "Substitute 2 in for y in either equation and solve for x:
\n" ); document.write( "x-2(2)=-12
\n" ); document.write( "x-4=-12
\n" ); document.write( "x-4+4=-12+4
\n" ); document.write( "x=-8
\n" ); document.write( "The solution is: (x,y)=(-8,2)
\n" ); document.write( "Happy Calculating!!!
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