2(r-1)=5(r-7)

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Solution for 2(r-1)=5(r-7) equation: 



2(r-1)=5(r-7)

We move all terms to the left:

2(r-1)-(5(r-7))=0

We multiply parentheses

2r-(5(r-7))-2=0



We calculate terms in parentheses: -(5(r-7)), so:

5(r-7)

We multiply parentheses

5r-35

Back to the equation:

-(5r-35)



We get rid of parentheses

2r-5r+35-2=0

We add all the numbers together, and all the variables

-3r+33=0

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

-3r=-33

r=-33/-3

r=+11

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