-103=9-4(3r+1)

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Solution for -103=9-4(3r+1) equation: 



-103=9-4(3r+1)

We move all terms to the left:

-103-(9-4(3r+1))=0



We calculate terms in parentheses: -(9-4(3r+1)), so:

9-4(3r+1)

determiningTheFunctionDomain
-4(3r+1)+9

We multiply parentheses

-12r-4+9

We add all the numbers together, and all the variables

-12r+5

Back to the equation:

-(-12r+5)



We get rid of parentheses

12r-5-103=0

We add all the numbers together, and all the variables

12r-108=0

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

12r=108

r=108/12

r=9

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