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3/r=-1
We move all terms to the left:
3/r-(-1)=0
Domain of the equation: r!=0We add all the numbers together, and all the variables
r∈R
3/r+1=0
We multiply all the terms by the denominator
1*r+3=0
We add all the numbers together, and all the variables
r+3=0
We move all terms containing r to the left, all other terms to the right
r=-3
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