-2r-6r=-7(3r+6)+7(3r+6)

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Solution for -2r-6r=-7(3r+6)+7(3r+6) equation: 



-2r-6r=-7(3r+6)+7(3r+6)

We move all terms to the left:

-2r-6r-(-7(3r+6)+7(3r+6))=0

We add all the numbers together, and all the variables

-8r-(-7(3r+6)+7(3r+6))=0



We calculate terms in parentheses: -(-7(3r+6)+7(3r+6)), so:

-7(3r+6)+7(3r+6)

We multiply parentheses

-21r+21r-42+42

We add all the numbers together, and all the variables



Back to the equation:

-()



We add all the numbers together, and all the variables

-8r=0

r=0/-8

r=0

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