document.write( "Question 205376: solve by Elimination Using Addition and Subtraction method\r
\n" ); document.write( "\n" ); document.write( "2x + 4y = 8
\n" ); document.write( " y - 3 = x \n" ); document.write( "
Algebra.Com's Answer #155029 by checkley77(12844)\"\" \"About 
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2x + 4y = 8
\n" ); document.write( " y - 3 = x multiply by 2 & add.
\n" ); document.write( "2y-6=2x
\n" ); document.write( "-2x+2y=6
\n" ); document.write( "2x+4y=8
\n" ); document.write( "---------
\n" ); document.write( "6y=14
\n" ); document.write( "y=14/6
\n" ); document.write( "y=7/3 ans.
\n" ); document.write( "7/3-3=x
\n" ); document.write( "(7-3*3)/3=x
\n" ); document.write( "(7-9)/3=x
\n" ); document.write( "-2/3=x ans.
\n" ); document.write( "Proof:
\n" ); document.write( "2*-2/3+4*7/3=8
\n" ); document.write( "-4/3+28/3=8
\n" ); document.write( "24/3=8
\n" ); document.write( "8=8\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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