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2^(2x+1)-9(2x)=-4
We move all terms to the left:
2^(2x+1)-9(2x)-(-4)=0
We add all the numbers together, and all the variables
-92x+2^(2x+1)+4=0
We move all terms containing x to the left, all other terms to the right
-92x+2^(2x+1)=-4
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