4.2^-x=7

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Solution for 4.2^-x=7 equation: 



4.2^-x=7

We move all terms to the left:

4.2^-x-(7)=0

determiningTheFunctionDomain
-x-7+4.2^=0

We add all the numbers together, and all the variables

-x=0

x=0/-1

x=0

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