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(2^x+3)+(2^x)=54
We move all terms to the left:
(2^x+3)+(2^x)-(54)=0
We get rid of parentheses
2^x+2^x+3-54=0
We add all the numbers together, and all the variables
2^x+2^x-51=0
We move all terms containing x to the left, all other terms to the right
2^x+2^x=51
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