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3^n=218^7
We move all terms to the left:
3^n-(218^7)=0
We add all the numbers together, and all the variables
3^n-23398900746453632=0
We move all terms containing n to the left, all other terms to the right
3^n=23398900746453632
n=23398900746453632/1
n=23398900746453632
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