document.write( "Question 476520: Solve
\n" ); document.write( " $\"+log+%28+7%2C%28x%2B8%29+%29+-+log+%28+7%2C%28x-5%29+%29+=+log+%28+7%2C4+%29+\"$ \n" ); document.write( "

Algebra.Com's Answer #326715 by robertb(5830) $\"\"$ $\"About$

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$\"+log+%28+7%2C%28x%2B8%29+%29+-+log+%28+7%2C%28x-5%29+%29+=+log+%28+7%2C4+%29+\"$ \r
\n" ); document.write( "\n" ); document.write( "==> $\"+log+%28+7%2C%28%28x%2B8%29%2F%28x-5%29%29+%29+=+log+%28+7%2C4+%29+\"$ \r
\n" ); document.write( "\n" ); document.write( "==>(x+8)/(x-5) = 4, because the logarithmic function is 1-to-1.\r
\n" ); document.write( "\n" ); document.write( "==> x + 8 = 4x - 20 \r
\n" ); document.write( "\n" ); document.write( "==> 28 = 3x\r
\n" ); document.write( "\n" ); document.write( "==> x = 28/3.\r
\n" ); document.write( "\n" ); document.write( "This value satisfies the original equation, and so is the final answer. \n" ); document.write( "

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