-11r+9r=-(r+5)-(4-8r)

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Solution for -11r+9r=-(r+5)-(4-8r) equation: 



-11r+9r=-(r+5)-(4-8r)

We move all terms to the left:

-11r+9r-(-(r+5)-(4-8r))=0

We add all the numbers together, and all the variables

-11r+9r-(-(r+5)-(-8r+4))=0

We add all the numbers together, and all the variables

-2r-(-(r+5)-(-8r+4))=0



We calculate terms in parentheses: -(-(r+5)-(-8r+4)), so:

-(r+5)-(-8r+4)

We get rid of parentheses

-r+8r-5-4

We add all the numbers together, and all the variables

7r-9

Back to the equation:

-(7r-9)



We get rid of parentheses

-2r-7r+9=0

We add all the numbers together, and all the variables

-9r+9=0

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

-9r=-9

r=-9/-9

r=1

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