198=-9(17+r)

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Solution for 198=-9(17+r) equation: 



198=-9(17+r)

We move all terms to the left:

198-(-9(17+r))=0

We add all the numbers together, and all the variables

-(-9(r+17))+198=0



We calculate terms in parentheses: -(-9(r+17)), so:

-9(r+17)

We multiply parentheses

-9r-153

Back to the equation:

-(-9r-153)



We get rid of parentheses

9r+153+198=0

We add all the numbers together, and all the variables

9r+351=0

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

9r=-351

r=-351/9

r=-39

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