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

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Solution for -2(r+5)-r=-(r+4)-8r equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1r-2(r+5)-(-(r+4)-8r)=0

We multiply parentheses

-1r-2r-(-(r+4)-8r)-10=0



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

-(r+4)-8r

We add all the numbers together, and all the variables

-8r-(r+4)

We get rid of parentheses

-8r-r-4

We add all the numbers together, and all the variables

-9r-4

Back to the equation:

-(-9r-4)



We add all the numbers together, and all the variables

-3r-(-9r-4)-10=0

We get rid of parentheses

-3r+9r+4-10=0

We add all the numbers together, and all the variables

6r-6=0

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

6r=6

r=6/6

r=1

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