document.write( "Question 324645: Solve using substitution:
\n" ); document.write( "4x − y − 4 = 0
\n" ); document.write( "7y = 29 + 9x
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Algebra.Com's Answer #232395 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
1. $\"4x-y-4+=+0\"$
\n" ); document.write( "2. $\"7y+=+29+%2B+9x\"$
\n" ); document.write( "From eq. 1,
\n" ); document.write( " $\"4x-y-4=0\"$
\n" ); document.write( " $\"y=4x-4\"$
\n" ); document.write( "Substitute into eq. 2,
\n" ); document.write( " $\"7%284x-4%29=29%2B9x\"$
\n" ); document.write( " $\"28x-28=29%2B9x\"$
\n" ); document.write( " $\"19x=57\"$
\n" ); document.write( " $\"highlight%28x=3%29\"$
\n" ); document.write( "Then,
\n" ); document.write( " $\"y=4%283%29-4\"$
\n" ); document.write( " $\"y=12-4\"$
\n" ); document.write( " $\"highlight%28y=8%29\"$ \n" ); document.write( "

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