document.write( "Question 482670: solve for x
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document.write( "12^(-7x)=7^(-x+8)
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document.write( "give the exact answer using base 10 logarithms \n" );
document.write( "
Algebra.Com's Answer #330379 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve for x \n" ); document.write( "12^(-7x)=7^(-x+8) \n" ); document.write( "give the exact answer using base 10 logarithms \n" ); document.write( "------------ \n" ); document.write( "-7x*log(12) = (-x+8)*log7 \n" ); document.write( "---- \n" ); document.write( "-7*log(12) = -x*log(7) + 8*log(7) \n" ); document.write( "(-7log(12)+log(7)]x = 8*log(7) \n" ); document.write( "---- \n" ); document.write( "x = -0.1260 \n" ); document.write( "================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |