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r-9/5=-2
We move all terms to the left:
r-9/5-(-2)=0
We add all the numbers together, and all the variables
r+2-9/5=0
We multiply all the terms by the denominator
r*5-9+2*5=0
We add all the numbers together, and all the variables
r*5+1=0
Wy multiply elements
5r+1=0
We move all terms containing r to the left, all other terms to the right
5r=-1
r=-1/5
r=-1/5
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