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0.8^x=0.25
We move all terms to the left:
0.8^x-(0.25)=0
We add all the numbers together, and all the variables
0.8^x-0.25=0
We move all terms containing x to the left, all other terms to the right
0.8^x=0.25
x=0.25/1
x=0.25
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