document.write( "Question 1014354: 5.3\r
\n" ); document.write( "\n" ); document.write( "Solve the following exponential equation by expressing each side as a power of the same base and then equating exponents.\r
\n" ); document.write( "\n" ); document.write( "4^x+7 =16^x-4\r
\n" ); document.write( "\n" ); document.write( "The solution set is { }\r
\n" ); document.write( "\n" ); document.write( "I got 15. Is this correct?
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Algebra.Com's Answer #630651 by rothauserc(4718)\"\" \"About 
You can put this solution on YOUR website!
if your problem is 4^(x+7) = 16^(x-4), you are correct since
\n" ); document.write( "16^(x-4) = (4^2)^(x-4) = 4^(2x-8), then
\n" ); document.write( "4^(x+7) = 4^(2x-8)
\n" ); document.write( "x+7 = 2x-8
\n" ); document.write( "x = 15
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