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10r-5r=7-1.7(9-10r)
We move all terms to the left:
10r-5r-(7-1.7(9-10r))=0
We add all the numbers together, and all the variables
10r-5r-(7-1.7(-10r+9))=0
We add all the numbers together, and all the variables
5r-(7-1.7(-10r+9))=0
We calculate terms in parentheses: -(7-1.7(-10r+9)), so:We get rid of parentheses
7-1.7(-10r+9)
determiningTheFunctionDomain -1.7(-10r+9)+7
We multiply parentheses
17r-15.3+7
We add all the numbers together, and all the variables
17r-8.3
Back to the equation:
-(17r-8.3)
5r-17r+8.3=0
We add all the numbers together, and all the variables
-12r+8.3=0
We move all terms containing r to the left, all other terms to the right
-12r=-8.3
r=-8.3/-12
r=1.93023255814/2.79069767442
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