-8r+2(-7+r)=-2(9r+1)

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Solution for -8r+2(-7+r)=-2(9r+1) equation: 



-8r+2(-7+r)=-2(9r+1)

We move all terms to the left:

-8r+2(-7+r)-(-2(9r+1))=0

We add all the numbers together, and all the variables

-8r+2(r-7)-(-2(9r+1))=0

We multiply parentheses

-8r+2r-(-2(9r+1))-14=0



We calculate terms in parentheses: -(-2(9r+1)), so:

-2(9r+1)

We multiply parentheses

-18r-2

Back to the equation:

-(-18r-2)



We add all the numbers together, and all the variables

-6r-(-18r-2)-14=0

We get rid of parentheses

-6r+18r+2-14=0

We add all the numbers together, and all the variables

12r-12=0

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

12r=12

r=12/12

r=1

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