2r=r-10

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Solution for 2r=r-10 equation: 



2r=r-10

We move all terms to the left:

2r-(r-10)=0

We get rid of parentheses

2r-r+10=0

We add all the numbers together, and all the variables

r+10=0

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

r=-10

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