30=5(r+2.2)

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Solution for 30=5(r+2.2) equation: 



30=5(r+2.2)

We move all terms to the left:

30-(5(r+2.2))=0



We calculate terms in parentheses: -(5(r+2.2)), so:

5(r+2.2)

We multiply parentheses

5r+11

Back to the equation:

-(5r+11)



We get rid of parentheses

-5r-11+30=0

We add all the numbers together, and all the variables

-5r+19=0

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

-5r=-19

r=-19/-5

r=3+4/5

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