2r-7=-28

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Solution for 2r-7=-28 equation: 



2r-7=-28

We move all terms to the left:

2r-7-(-28)=0

We add all the numbers together, and all the variables

2r+21=0

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

2r=-21

r=-21/2

r=-10+1/2

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