380=810(1-d)

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Solution for 380=810(1-d) equation: 



380=810(1-d)

We move all terms to the left:

380-(810(1-d))=0

We add all the numbers together, and all the variables

-(810(-1d+1))+380=0



We calculate terms in parentheses: -(810(-1d+1)), so:

810(-1d+1)

We multiply parentheses

-810d+810

Back to the equation:

-(-810d+810)



We get rid of parentheses

810d-810+380=0

We add all the numbers together, and all the variables

810d-430=0

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

810d=430

d=430/810

d=43/81

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