2r-31=45

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Solution for 2r-31=45 equation: 



2r-31=45

We move all terms to the left:

2r-31-(45)=0

We add all the numbers together, and all the variables

2r-76=0

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

2r=76

r=76/2

r=38

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