8+10r=-3(-r+9)

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Solution for 8+10r=-3(-r+9) equation: 



8+10r=-3(-r+9)

We move all terms to the left:

8+10r-(-3(-r+9))=0

We add all the numbers together, and all the variables

10r-(-3(-1r+9))+8=0



We calculate terms in parentheses: -(-3(-1r+9)), so:

-3(-1r+9)

We multiply parentheses

3r-27

Back to the equation:

-(3r-27)



We get rid of parentheses

10r-3r+27+8=0

We add all the numbers together, and all the variables

7r+35=0

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

7r=-35

r=-35/7

r=-5

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