document.write( "Question 993905: Solve the linear system using substitution.\r
\n" ); document.write( "\n" ); document.write( "4x - y = 5
\n" ); document.write( "4x + 4 = -4
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Algebra.Com's Answer #613078 by ikleyn(52787)\"\" \"About 
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\n" ); document.write( "\"system%284x+-+y+=+5%2C%0D%0A4x+%2B+4+=+-4%29\".\r
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\n" ); document.write( "\n" ); document.write( "From the second equation you have  4x = -8,  hence,  x = -2.\r
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\n" ); document.write( "\n" ); document.write( "Substitute it into the first equation and solve for  y.\r
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