9-4.5=r

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Solution for 9-4.5=r equation: 



9-4.5=r

We move all terms to the left:

9-4.5-(r)=0

We add all the numbers together, and all the variables

-1r+4.5=0

We move all terms containing r to the left, all other terms to the right

-r=-4.5

r=-4.5/-1

r=4+0.5/1

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