-9=-2(3+r)-3(1+6r)

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Solution for -9=-2(3+r)-3(1+6r) equation: 



-9=-2(3+r)-3(1+6r)

We move all terms to the left:

-9-(-2(3+r)-3(1+6r))=0

We add all the numbers together, and all the variables

-(-2(r+3)-3(6r+1))-9=0



We calculate terms in parentheses: -(-2(r+3)-3(6r+1)), so:

-2(r+3)-3(6r+1)

We multiply parentheses

-2r-18r-6-3

We add all the numbers together, and all the variables

-20r-9

Back to the equation:

-(-20r-9)



We get rid of parentheses

20r+9-9=0

We add all the numbers together, and all the variables

20r=0

r=0/20

r=0

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