-15+6r=-3(1-r)

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Solution for -15+6r=-3(1-r) equation: 



-15+6r=-3(1-r)

We move all terms to the left:

-15+6r-(-3(1-r))=0

We add all the numbers together, and all the variables

6r-(-3(-1r+1))-15=0



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

-3(-1r+1)

We multiply parentheses

3r-3

Back to the equation:

-(3r-3)



We get rid of parentheses

6r-3r+3-15=0

We add all the numbers together, and all the variables

3r-12=0

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

3r=12

r=12/3

r=4

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