4.5r=2.5(r+4)

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Solution for 4.5r=2.5(r+4) equation: 



4.5r=2.5(r+4)

We move all terms to the left:

4.5r-(2.5(r+4))=0



We calculate terms in parentheses: -(2.5(r+4)), so:

2.5(r+4)

We multiply parentheses

2.5r+10

Back to the equation:

-(2.5r+10)



We get rid of parentheses

4.5r-2.5r-10=0

We add all the numbers together, and all the variables

2r-10=0

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

2r=10

r=10/2

r=5

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