7-r=-3r-7(-5r-1)

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Solution for 7-r=-3r-7(-5r-1) equation: 



7-r=-3r-7(-5r-1)

We move all terms to the left:

7-r-(-3r-7(-5r-1))=0

We add all the numbers together, and all the variables

-1r-(-3r-7(-5r-1))+7=0



We calculate terms in parentheses: -(-3r-7(-5r-1)), so:

-3r-7(-5r-1)

We multiply parentheses

-3r+35r+7

We add all the numbers together, and all the variables

32r+7

Back to the equation:

-(32r+7)



We get rid of parentheses

-1r-32r-7+7=0

We add all the numbers together, and all the variables

-33r=0

r=0/-33

r=0

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