2.1r=-38.85

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Solution for 2.1r=-38.85 equation: 



2.1r=-38.85

We move all terms to the left:

2.1r-(-38.85)=0

We add all the numbers together, and all the variables

2.1r+38.85=0

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

2.1r=-38.85

r=-38.85/2.1

r=-18+1/2

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