198=-6(2+5r)

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Solution for 198=-6(2+5r) equation: 



198=-6(2+5r)

We move all terms to the left:

198-(-6(2+5r))=0

We add all the numbers together, and all the variables

-(-6(5r+2))+198=0



We calculate terms in parentheses: -(-6(5r+2)), so:

-6(5r+2)

We multiply parentheses

-30r-12

Back to the equation:

-(-30r-12)



We get rid of parentheses

30r+12+198=0

We add all the numbers together, and all the variables

30r+210=0

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

30r=-210

r=-210/30

r=-7

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