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(3^x)(2.718^7x+2)=15.
We move all terms to the left:
(3^x)(2.718^7x+2)-(15.)=0
We add all the numbers together, and all the variables
3^x(2.718^7x+2)-15=0
We move all terms containing x to the left, all other terms to the right
3^x(2.718^7x+2)=15
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