2(3^x+1)-6(3^x-1)-3x=9
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2*3^x-6*3^x-4-3X=9
(2*3^x-6*3^x)-3X=14
(2*3^x)(1-3)-3X=14
(2*3^x)(-2)-3X=14
(-4*3^x)-3X=14ans
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