-4+5=r

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Solution for -4+5=r equation: 



-4+5=r

We move all terms to the left:

-4+5-(r)=0

We add all the numbers together, and all the variables

-1r+1=0

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

-r=-1

r=-1/-1

r=1

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