48=3+3(3-4r)

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Solution for 48=3+3(3-4r) equation: 



48=3+3(3-4r)

We move all terms to the left:

48-(3+3(3-4r))=0

We add all the numbers together, and all the variables

-(3+3(-4r+3))+48=0



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

3+3(-4r+3)

determiningTheFunctionDomain
3(-4r+3)+3

We multiply parentheses

-12r+9+3

We add all the numbers together, and all the variables

-12r+12

Back to the equation:

-(-12r+12)



We get rid of parentheses

12r-12+48=0

We add all the numbers together, and all the variables

12r+36=0

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

12r=-36

r=-36/12

r=-3

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