document.write( "Question 970391: Solve by substitution:\r
\n" ); document.write( "\n" ); document.write( "-4x - y = 4\r
\n" ); document.write( "\n" ); document.write( "x = y + 9
\n" ); document.write( "

Algebra.Com's Answer #593019 by amarjeeth123(569)\"\" \"About 
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-4x - y = 4.........equation 1
\n" ); document.write( "x = y + 9...........equation 2
\n" ); document.write( "From 2 we get y=x-9
\n" ); document.write( "Substituting in 1 we get,
\n" ); document.write( "-4x-x+9=4
\n" ); document.write( "-5x=4-9
\n" ); document.write( "-5x=-5
\n" ); document.write( "x=1.
\n" ); document.write( "y=-8.
\n" ); document.write( "
\n" );