-10r=-9(r+2)+2r

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Solution for -10r=-9(r+2)+2r equation: 



-10r=-9(r+2)+2r

We move all terms to the left:

-10r-(-9(r+2)+2r)=0



We calculate terms in parentheses: -(-9(r+2)+2r), so:

-9(r+2)+2r

We add all the numbers together, and all the variables

2r-9(r+2)

We multiply parentheses

2r-9r-18

We add all the numbers together, and all the variables

-7r-18

Back to the equation:

-(-7r-18)



We get rid of parentheses

-10r+7r+18=0

We add all the numbers together, and all the variables

-3r+18=0

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

-3r=-18

r=-18/-3

r=+6

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