-87=3-6(2r+3)

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Solution for -87=3-6(2r+3) equation: 



-87=3-6(2r+3)

We move all terms to the left:

-87-(3-6(2r+3))=0



We calculate terms in parentheses: -(3-6(2r+3)), so:

3-6(2r+3)

determiningTheFunctionDomain
-6(2r+3)+3

We multiply parentheses

-12r-18+3

We add all the numbers together, and all the variables

-12r-15

Back to the equation:

-(-12r-15)



We get rid of parentheses

12r+15-87=0

We add all the numbers together, and all the variables

12r-72=0

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

12r=72

r=72/12

r=6

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