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925.9=2^n-1
We move all terms to the left:
925.9-(2^n-1)=0
We get rid of parentheses
-2^n+1+925.9=0
We add all the numbers together, and all the variables
-2^n+926.9=0
We move all terms containing n to the left, all other terms to the right
-2^n=-926.9
n=-926.9/1
n=-926.9
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