-28=r/7-25

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Solution for -28=r/7-25 equation: 



-28=r/7-25

We move all terms to the left:

-28-(r/7-25)=0

We get rid of parentheses

-r/7+25-28=0

We multiply all the terms by the denominator


-r+25*7-28*7=0

We add all the numbers together, and all the variables

-1r-21=0

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

-r=21

r=21/-1

r=-21

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