3(8-7r)=12+5(r-8)

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Solution for 3(8-7r)=12+5(r-8) equation: 



3(8-7r)=12+5(r-8)

We move all terms to the left:

3(8-7r)-(12+5(r-8))=0

We add all the numbers together, and all the variables

3(-7r+8)-(12+5(r-8))=0

We multiply parentheses

-21r-(12+5(r-8))+24=0



We calculate terms in parentheses: -(12+5(r-8)), so:

12+5(r-8)

determiningTheFunctionDomain
5(r-8)+12

We multiply parentheses

5r-40+12

We add all the numbers together, and all the variables

5r-28

Back to the equation:

-(5r-28)



We get rid of parentheses

-21r-5r+28+24=0

We add all the numbers together, and all the variables

-26r+52=0

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

-26r=-52

r=-52/-26

r=+2

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