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4^-3x=0.1
We move all terms to the left:
4^-3x-(0.1)=0
We add all the numbers together, and all the variables
-3x+0.87055056329612=0
We move all terms containing x to the left, all other terms to the right
-3x=-0.87055056329612
x=-0.87055056329612/-3
x=0.87055056329612/3
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