document.write( "Question 42247: Solve (1/81)^t = 243^t-2.\r
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Algebra.Com's Answer #27381 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Change everything into powers of 3...so from \n" ); document.write( "(1/81)^t = 243^(t-2) \n" ); document.write( "we get \n" ); document.write( "(3^(-4))^t = (3^5)^(t-2) \n" ); document.write( "3^(-4t) = 3^(5t-10) \n" ); document.write( "and thus \n" ); document.write( "-4t = 5t - 10 \n" ); document.write( "-9t = -10 \n" ); document.write( "t = 10/9 \n" ); document.write( " |