Solve 8^x+7=16^2x-1

I need help. I know you have to put them to log but I'm not so sure...
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1 Answer

8x+7=162x-1; 8=23; 16=24,

23x+21=28x-4, so 3x+21=8x-4, 25=5x, x=5.

by Top Rated User (1.2m points)

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