2r+20=30

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Solution for 2r+20=30 equation: 



2r+20=30

We move all terms to the left:

2r+20-(30)=0

We add all the numbers together, and all the variables

2r-10=0

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

2r=10

r=10/2

r=5

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