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1/117649=7^x
We move all terms to the left:
1/117649-(7^x)=0
We multiply all the terms by the denominator
-7^x*117649+1=0
Wy multiply elements
-823543x+1=0
We move all terms containing x to the left, all other terms to the right
-823543x=-1
x=-1/-823543
x=1/823543
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