28=7(3r-5)

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Solution for 28=7(3r-5) equation: 



28=7(3r-5)

We move all terms to the left:

28-(7(3r-5))=0



We calculate terms in parentheses: -(7(3r-5)), so:

7(3r-5)

We multiply parentheses

21r-35

Back to the equation:

-(21r-35)



We get rid of parentheses

-21r+35+28=0

We add all the numbers together, and all the variables

-21r+63=0

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

-21r=-63

r=-63/-21

r=+3

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