.3=(400p-8000)/400p

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Solution for .3=(400p-8000)/400p equation: 



.3=(400p-8000)/400p

We move all terms to the left:

.3-((400p-8000)/400p)=0



Domain of the equation: 400p)!=0

p!=0/1

p!=0

p∈R



We add all the numbers together, and all the variables

-((400p-8000)/400p)+0.3=0

We multiply all the terms by the denominator


-((400p-8000)+(0.3)*400p)=0



We calculate terms in parentheses: -((400p-8000)+(0.3)*400p), so:

(400p-8000)+(0.3)*400p

We multiply parentheses

(400p-8000)+120p

We get rid of parentheses

400p+120p-8000

We add all the numbers together, and all the variables

520p-8000

Back to the equation:

-(520p-8000)



We get rid of parentheses

-520p+8000=0

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

-520p=-8000

p=-8000/-520

p=15+5/13

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