-48=r-30

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Solution for -48=r-30 equation: 



-48=r-30

We move all terms to the left:

-48-(r-30)=0

We get rid of parentheses

-r+30-48=0

We add all the numbers together, and all the variables

-1r-18=0

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

-r=18

r=18/-1

r=-18

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