15+3r=3(2-2r)

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Solution for 15+3r=3(2-2r) equation: 



15+3r=3(2-2r)

We move all terms to the left:

15+3r-(3(2-2r))=0

We add all the numbers together, and all the variables

3r-(3(-2r+2))+15=0



We calculate terms in parentheses: -(3(-2r+2)), so:

3(-2r+2)

We multiply parentheses

-6r+6

Back to the equation:

-(-6r+6)



We get rid of parentheses

3r+6r-6+15=0

We add all the numbers together, and all the variables

9r+9=0

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

9r=-9

r=-9/9

r=-1

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