-7=-7(r-2)

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



-7=-7(r-2)

We move all terms to the left:

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



We calculate terms in parentheses: -(-7(r-2)), so:

-7(r-2)

We multiply parentheses

-7r+14

Back to the equation:

-(-7r+14)



We get rid of parentheses

7r-14-7=0

We add all the numbers together, and all the variables

7r-21=0

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

7r=21

r=21/7

r=3

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