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236=-2+7(8r+2)
We move all terms to the left:
236-(-2+7(8r+2))=0
We calculate terms in parentheses: -(-2+7(8r+2)), so:We get rid of parentheses
-2+7(8r+2)
determiningTheFunctionDomain 7(8r+2)-2
We multiply parentheses
56r+14-2
We add all the numbers together, and all the variables
56r+12
Back to the equation:
-(56r+12)
-56r-12+236=0
We add all the numbers together, and all the variables
-56r+224=0
We move all terms containing r to the left, all other terms to the right
-56r=-224
r=-224/-56
r=+4
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