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2/9r=8
We move all terms to the left:
2/9r-(8)=0
Domain of the equation: 9r!=0We multiply all the terms by the denominator
r!=0/9
r!=0
r∈R
-8*9r+2=0
Wy multiply elements
-72r+2=0
We move all terms containing r to the left, all other terms to the right
-72r=-2
r=-2/-72
r=1/36
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