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-6/5r=9
We move all terms to the left:
-6/5r-(9)=0
Domain of the equation: 5r!=0We multiply all the terms by the denominator
r!=0/5
r!=0
r∈R
-9*5r-6=0
Wy multiply elements
-45r-6=0
We move all terms containing r to the left, all other terms to the right
-45r=6
r=6/-45
r=-2/15
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