10=2(r+2)

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Solution for 10=2(r+2) equation: 



10=2(r+2)

We move all terms to the left:

10-(2(r+2))=0



We calculate terms in parentheses: -(2(r+2)), so:

2(r+2)

We multiply parentheses

2r+4

Back to the equation:

-(2r+4)



We get rid of parentheses

-2r-4+10=0

We add all the numbers together, and all the variables

-2r+6=0

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

-2r=-6

r=-6/-2

r=+3

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