3^x-1+3^x=12

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Solution for 3^x-1+3^x=12 equation: 



3^x-1+3^x=12

We move all terms to the left:

3^x-1+3^x-(12)=0

We add all the numbers together, and all the variables

3^x+3^x-13=0

We move all terms containing x to the left, all other terms to the right

3^x+3^x=13

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