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2^(x+3)+2^(x-1)+2^(x-2)=70
We move all terms to the left:
2^(x+3)+2^(x-1)+2^(x-2)-(70)=0
We move all terms containing x to the left, all other terms to the right
2^(x+3)+2^(x-1)+2^(x-2)=70
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