document.write( "Question 1144759: Given 2^m × (1/8)^n = 128 and 4^m ÷ 2^(-4n) = 1/6, find the value of (m-n). \n" ); document.write( "

Algebra.Com's Answer #766040 by Edwin McCravy(20055) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "By substitution:\r\n" );
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document.write( "Multiply both sides by 2\r\n" );
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document.write( "Take natural logs of both sides:\r\n" );
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document.write( "Divide both sides by ln(2)\r\n" );
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document.write( "Multiply both sides by 1/10\r\n" );
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document.write( "But you don't want m or n, you want m-n\r\n" );
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document.write( "Edwin

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