(3r+12)=(-8r+210)

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Solution for (3r+12)=(-8r+210) equation: 



(3r+12)=(-8r+210)

We move all terms to the left:

(3r+12)-((-8r+210))=0

We get rid of parentheses

3r-((-8r+210))+12=0



We calculate terms in parentheses: -((-8r+210)), so:

(-8r+210)

We get rid of parentheses

-8r+210

Back to the equation:

-(-8r+210)



We get rid of parentheses

3r+8r-210+12=0

We add all the numbers together, and all the variables

11r-198=0

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

11r=198

r=198/11

r=18

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