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2^x(7/2)=28
We move all terms to the left:
2^x(7/2)-(28)=0
We add all the numbers together, and all the variables
2^x(+7/2)-28=0
We multiply all the terms by the denominator
2^x(+7-28*2)=0
We add all the numbers together, and all the variables
2^x(-49)=0
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