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5^-x=0.125
We move all terms to the left:
5^-x-(0.125)=0
We add all the numbers together, and all the variables
-1x+0.81776543395794=0
We move all terms containing x to the left, all other terms to the right
-x=-0.81776543395794
x=-0.81776543395794/-1
x=0.81776543395794/1
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