R(x)=500(300-x)

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Solution for R(x)=500(300-x) equation: 



(R)=500(300-R)

We move all terms to the left:

(R)-(500(300-R))=0

We add all the numbers together, and all the variables

R-(500(-1R+300))=0



We calculate terms in parentheses: -(500(-1R+300)), so:

500(-1R+300)

We multiply parentheses

-500R+150000

Back to the equation:

-(-500R+150000)



We get rid of parentheses

R+500R-150000=0

We add all the numbers together, and all the variables

501R-150000=0

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

501R=150000

R=150000/501

R=299+67/167

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