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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-6(-5r+2)+5r

We add all the numbers together, and all the variables

5r-6(-5r+2)

We multiply parentheses

5r+30r-12

We add all the numbers together, and all the variables

35r-12

Back to the equation:

-(35r-12)



We get rid of parentheses

-35r+12+198=0

We add all the numbers together, and all the variables

-35r+210=0

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

-35r=-210

r=-210/-35

r=+6

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