39-r=7-3(5r-6)

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Solution for 39-r=7-3(5r-6) equation: 



39-r=7-3(5r-6)

We move all terms to the left:

39-r-(7-3(5r-6))=0

We add all the numbers together, and all the variables

-1r-(7-3(5r-6))+39=0



We calculate terms in parentheses: -(7-3(5r-6)), so:

7-3(5r-6)

determiningTheFunctionDomain
-3(5r-6)+7

We multiply parentheses

-15r+18+7

We add all the numbers together, and all the variables

-15r+25

Back to the equation:

-(-15r+25)



We get rid of parentheses

-1r+15r-25+39=0

We add all the numbers together, and all the variables

14r+14=0

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

14r=-14

r=-14/14

r=-1

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