-18=6(2-r)

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Solution for -18=6(2-r) equation: 



-18=6(2-r)

We move all terms to the left:

-18-(6(2-r))=0

We add all the numbers together, and all the variables

-(6(-1r+2))-18=0



We calculate terms in parentheses: -(6(-1r+2)), so:

6(-1r+2)

We multiply parentheses

-6r+12

Back to the equation:

-(-6r+12)



We get rid of parentheses

6r-12-18=0

We add all the numbers together, and all the variables

6r-30=0

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

6r=30

r=30/6

r=5

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