7+7r=-8r+4(r-1)

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Solution for 7+7r=-8r+4(r-1) equation: 



7+7r=-8r+4(r-1)

We move all terms to the left:

7+7r-(-8r+4(r-1))=0



We calculate terms in parentheses: -(-8r+4(r-1)), so:

-8r+4(r-1)

We multiply parentheses

-8r+4r-4

We add all the numbers together, and all the variables

-4r-4

Back to the equation:

-(-4r-4)



We get rid of parentheses

7r+4r+4+7=0

We add all the numbers together, and all the variables

11r+11=0

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

11r=-11

r=-11/11

r=-1

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