-217=7(4r-3)

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Solution for -217=7(4r-3) equation: 



-217=7(4r-3)

We move all terms to the left:

-217-(7(4r-3))=0



We calculate terms in parentheses: -(7(4r-3)), so:

7(4r-3)

We multiply parentheses

28r-21

Back to the equation:

-(28r-21)



We get rid of parentheses

-28r+21-217=0

We add all the numbers together, and all the variables

-28r-196=0

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

-28r=196

r=196/-28

r=-7

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