400=(1/20)^7x+8

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Solution for 400=(1/20)^7x+8 equation: 



400=(1/20)^7x+8

We move all terms to the left:

400-((1/20)^7x+8)=0



Domain of the equation: 20)^7x+8)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-((+1/20)^7x+8)+400=0

We multiply all the terms by the denominator


-((+1+400*20)^7x+8)=0



We calculate terms in parentheses: -((+1+400*20)^7x+8), so:

(+1+400*20)^7x+8

We add all the numbers together, and all the variables

8001^7x+8

Back to the equation:

-(8001^7x+8)



We get rid of parentheses

-8001^7x-8=0

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

-8001^7x=8

x=8/1

x=8

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