21^x-3=13

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Solution for 21^x-3=13 equation: 



21^x-3=13

We move all terms to the left:

21^x-3-(13)=0

We add all the numbers together, and all the variables

21^x-16=0

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

21^x=16

x=16/1

x=16

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