7^x-9=12

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Solution for 7^x-9=12 equation: 



7^x-9=12

We move all terms to the left:

7^x-9-(12)=0

We add all the numbers together, and all the variables

7^x-21=0

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

7^x=21

x=21/1

x=21

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