document.write( "Question 93739: Please help. Solve by substiution.
\n" ); document.write( "8x-4y=16
\n" ); document.write( " y=2x-4 \n" ); document.write( "

Algebra.Com's Answer #68300 by Earlsdon(6294) $\"\"$ $\"About$

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Solve by substitution:
\n" ); document.write( " $\"8x-4y+=+16\"$
\n" ); document.write( " $\"y+=+2x-4\"$ Substitute this value of y into the first equation and solve for x.
\n" ); document.write( " $\"8x+-4%282x-4%29+=+16\"$ Simplify.
\n" ); document.write( " $\"8x-8x%2B16+=+16\"$ Combine like-terms.
\n" ); document.write( " $\"16+=+16\"$
\n" ); document.write( "This result indicates that the two equations represent the very same line and there are an infinity of solutions.
\n" ); document.write( "The system is a \"consistent system\" and the equations are \"dependent equations\". \n" ); document.write( "

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