6=2(r-1)

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Solution for 6=2(r-1) equation: 



6=2(r-1)

We move all terms to the left:

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



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

2(r-1)

We multiply parentheses

2r-2

Back to the equation:

-(2r-2)



We get rid of parentheses

-2r+2+6=0

We add all the numbers together, and all the variables

-2r+8=0

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

-2r=-8

r=-8/-2

r=+4

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