3^(x+1)+3^(x)=3^(2)*4

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Solution for 3^(x+1)+3^(x)=3^(2)*4 equation: 



3^(x+1)+3^(x)=3^(2)*4

We move all terms to the left:

3^(x+1)+3^(x)-(3^(2)*4)=0

We add all the numbers together, and all the variables

3^(x+1)+3^x-36=0

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

3^(x+1)+3^x=36

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