19=-4(r+5)+r

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Solution for 19=-4(r+5)+r equation: 



19=-4(r+5)+r

We move all terms to the left:

19-(-4(r+5)+r)=0



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

-4(r+5)+r

We add all the numbers together, and all the variables

r-4(r+5)

We multiply parentheses

r-4r-20

We add all the numbers together, and all the variables

-3r-20

Back to the equation:

-(-3r-20)



We get rid of parentheses

3r+20+19=0

We add all the numbers together, and all the variables

3r+39=0

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

3r=-39

r=-39/3

r=-13

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