-1-3r=-4-(r+7)

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Solution for -1-3r=-4-(r+7) equation: 



-1-3r=-4-(r+7)

We move all terms to the left:

-1-3r-(-4-(r+7))=0



We calculate terms in parentheses: -(-4-(r+7)), so:

-4-(r+7)

determiningTheFunctionDomain
-(r+7)-4

We get rid of parentheses

-r-7-4

We add all the numbers together, and all the variables

-1r-11

Back to the equation:

-(-1r-11)



We get rid of parentheses

-3r+1r+11-1=0

We add all the numbers together, and all the variables

-2r+10=0

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

-2r=-10

r=-10/-2

r=+5

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