-2+4r=-30

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Solution for -2+4r=-30 equation: 



-2+4r=-30

We move all terms to the left:

-2+4r-(-30)=0

We add all the numbers together, and all the variables

4r+28=0

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

4r=-28

r=-28/4

r=-7

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