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64^x-121=7-2^6x
We move all terms to the left:
64^x-121-(7-2^6x)=0
We get rid of parentheses
64^x+2^6x-7-121=0
We add all the numbers together, and all the variables
64^x+2^6x-128=0
We move all terms containing x to the left, all other terms to the right
64^x+2^6x=128
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