document.write( "Question 142208: ln x-ln(x+7)=-1 \n" ); document.write( "

Algebra.Com's Answer #103529 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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ln(x)- ln(x+7) = -1
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\n" ); document.write( "Same as
\n" ); document.write( "ln( $\"x%2F%28x%2B7%29\"$ ) = -1
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\n" ); document.write( "Find e^ of both sides
\n" ); document.write( " $\"x%2F%28x%2B7%29\"$ = .36788
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\n" ); document.write( "Multiply both sides by (x+7) and you have:
\n" ); document.write( "x = .36788(x+7)
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\n" ); document.write( "x = .36788x + 2.5752
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\n" ); document.write( "x -.36788x = 2.5752
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\n" ); document.write( ".63212x = 2.5752
\n" ); document.write( "x = $\"2.5752%2F.63212\"$
\n" ); document.write( "x = 4.074
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\n" ); document.write( "Check solution on calc: enter ln(4.074) - ln(11.074) = -.99997 ~ -1 \n" ); document.write( "

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