document.write( "Question 674383: how do you substitute:\r
\n" ); document.write( "\n" ); document.write( "3u + 8 = 4v
\n" ); document.write( "24v = 6 - 3u \n" ); document.write( "

Algebra.Com's Answer #419207 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1) $\"+3u+%2B+8+=+4v+\"$
\n" ); document.write( "(2) $\"+24v+=+6+-+3u+\"$
\n" ); document.write( "------------------
\n" ); document.write( "(2) $\"+24v+-+6+=+-3u+\"$
\n" ); document.write( "(2) $\"+-24v+%2B+6+=+3u+\"$
\n" ); document.write( "Substitute $\"+3u+\"$ in (2) in place
\n" ); document.write( "of $\"+3u+\"$ in (1)
\n" ); document.write( "(1) $\"+-24v+%2B+6+%2B+8+=+4v+\"$
\n" ); document.write( "(1) $\"+28v+=+14+\"$
\n" ); document.write( "(1) $\"+v+=+1%2F2+\"$
\n" ); document.write( "Plug this back into (1)
\n" ); document.write( "(1) $\"+3u+%2B+8+=+4%2A%281%2F2%29+\"$
\n" ); document.write( "(1) $\"+3u+=+2+-+8+\"$
\n" ); document.write( "(1) $\"+3u+=+-6+\"$
\n" ); document.write( "(1) $\"+u+=+-2+\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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