2r-7=31

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Solution for 2r-7=31 equation: 



2r-7=31

We move all terms to the left:

2r-7-(31)=0

We add all the numbers together, and all the variables

2r-38=0

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

2r=38

r=38/2

r=19

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