3=15-6(4+r)

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Solution for 3=15-6(4+r) equation: 



3=15-6(4+r)

We move all terms to the left:

3-(15-6(4+r))=0

We add all the numbers together, and all the variables

-(15-6(r+4))+3=0



We calculate terms in parentheses: -(15-6(r+4)), so:

15-6(r+4)

determiningTheFunctionDomain
-6(r+4)+15

We multiply parentheses

-6r-24+15

We add all the numbers together, and all the variables

-6r-9

Back to the equation:

-(-6r-9)



We get rid of parentheses

6r+9+3=0

We add all the numbers together, and all the variables

6r+12=0

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

6r=-12

r=-12/6

r=-2

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