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125=25^8x-2
We move all terms to the left:
125-(25^8x-2)=0
We get rid of parentheses
-25^8x+2+125=0
We add all the numbers together, and all the variables
-25^8x+127=0
We move all terms containing x to the left, all other terms to the right
-25^8x=-127
x=-127/1
x=-127
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