3=(r+5)/2

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Solution for 3=(r+5)/2 equation: 



3=(r+5)/2

We move all terms to the left:

3-((r+5)/2)=0

We multiply all the terms by the denominator


-((r+5)+3*2)=0



We calculate terms in parentheses: -((r+5)+3*2), so:

(r+5)+3*2

We add all the numbers together, and all the variables

(r+5)+6

We get rid of parentheses

r+5+6

We add all the numbers together, and all the variables

r+11

Back to the equation:

-(r+11)



We get rid of parentheses

-r-11=0

We add all the numbers together, and all the variables

-1r-11=0

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

-r=11

r=11/-1

r=-11

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