document.write( "Question 122917: Solve the system by addition.\r
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\n" ); document.write( "\n" ); document.write( " 4x – 8y = –5
\n" ); document.write( " 8x + 4y = 5
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Algebra.Com's Answer #90226 by checkley71(8403)\"\" \"About 
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4X-8Y=-5 NOW MULTIPLY THE OTHER EQUATION BY 2 * ADD.
\n" ); document.write( "16X+8Y=10
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\n" ); document.write( "20X=5
\n" ); document.write( "X=5/20
\n" ); document.write( "X=1/4 ANSWER.
\n" ); document.write( "4*1/4-8Y=-5
\n" ); document.write( "1-8Y=-5
\n" ); document.write( "-8Y=-5-1
\n" ); document.write( "Y=-6/-8
\n" ); document.write( "Y=3/4 ANSWER.
\n" ); document.write( "PROOF
\n" ); document.write( "8*1/4+4*3/4=5
\n" ); document.write( "2+3=5
\n" ); document.write( "5=5
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