document.write( "Question 61695This question is from textbook Alegbra Concepts and Applications
\n" ); document.write( ": please help\r
\n" ); document.write( "\n" ); document.write( "Use substitution to solve for x and y\r
\n" ); document.write( "\n" ); document.write( "4x + y = -5\r
\n" ); document.write( "\n" ); document.write( "2x - y = -1 \n" ); document.write( "
Algebra.Com's Answer #42716 by checkley71(8403)\"\" \"About 
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4X+Y=-5 OR Y=-4X-5 NOW SUBSTITUTE (-4X-5) FOR Y IN THE SECOND EQUATION
\n" ); document.write( "2X-(-4X-5)=-1
\n" ); document.write( "2X+4X+5=-1
\n" ); document.write( "6X=-1-5
\n" ); document.write( "6X=-6
\n" ); document.write( "X=-6/6
\n" ); document.write( "X=-1 SOLUTION NOW SOLVE FOR Y
\n" ); document.write( "4*-1+Y=-5
\n" ); document.write( "-4+Y=-5
\n" ); document.write( "Y=-5+4
\n" ); document.write( "Y=-1 SOLUTION
\n" ); document.write( "PROOF
\n" ); document.write( "2*-1-(-1)=-1
\n" ); document.write( "-2+1=-1
\n" ); document.write( "-1=-1\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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