3(-r+15)=-9-8(-2r+17)

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Solution for 3(-r+15)=-9-8(-2r+17) equation: 



3(-r+15)=-9-8(-2r+17)

We move all terms to the left:

3(-r+15)-(-9-8(-2r+17))=0

We add all the numbers together, and all the variables

3(-1r+15)-(-9-8(-2r+17))=0

We multiply parentheses

-3r-(-9-8(-2r+17))+45=0



We calculate terms in parentheses: -(-9-8(-2r+17)), so:

-9-8(-2r+17)

determiningTheFunctionDomain
-8(-2r+17)-9

We multiply parentheses

16r-136-9

We add all the numbers together, and all the variables

16r-145

Back to the equation:

-(16r-145)



We get rid of parentheses

-3r-16r+145+45=0

We add all the numbers together, and all the variables

-19r+190=0

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

-19r=-190

r=-190/-19

r=+10

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