2+2r=r+7(r+2)

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Solution for 2+2r=r+7(r+2) equation: 



2+2r=r+7(r+2)

We move all terms to the left:

2+2r-(r+7(r+2))=0



We calculate terms in parentheses: -(r+7(r+2)), so:

r+7(r+2)

We multiply parentheses

r+7r+14

We add all the numbers together, and all the variables

8r+14

Back to the equation:

-(8r+14)



We get rid of parentheses

2r-8r-14+2=0

We add all the numbers together, and all the variables

-6r-12=0

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

-6r=12

r=12/-6

r=-2

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