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-2.25=r-(4/5)
We move all terms to the left:
-2.25-(r-(4/5))=0
We add all the numbers together, and all the variables
-(r-(+4/5))-2.25=0
We multiply all the terms by the denominator
-(r-(+4-(2.25)*5))=0
We calculate terms in parentheses: -(r-(+4-(2.25)*5)), so:r=0/-1
r-(+4-(2.25)*5)
We add all the numbers together, and all the variables
r
Back to the equation:
-(r)
r=0
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