400=r(19.32)

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Solution for 400=r(19.32) equation: 



400=r(19.32)

We move all terms to the left:

400-(r(19.32))=0



We calculate terms in parentheses: -(r(19.32)), so:

r(19.32)

We multiply parentheses

19.32r

Back to the equation:

-(19.32r)



We add all the numbers together, and all the variables

-(+19.32r)+400=0

We get rid of parentheses

-19.32r+400=0

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

-19.32r=-400

r=-400/-19.32

r=20+8.4999999999999/12.075

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