2r-20=200

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Solution for 2r-20=200 equation: 



2r-20=200

We move all terms to the left:

2r-20-(200)=0

We add all the numbers together, and all the variables

2r-220=0

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

2r=220

r=220/2

r=110

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