8.5^x-2=21

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Solution for 8.5^x-2=21 equation: 



8.5^x-2=21

We move all terms to the left:

8.5^x-2-(21)=0

We add all the numbers together, and all the variables

8.5^x-23=0

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

8.5^x=23

x=23/1

x=23

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