-13.9+r=-22.9

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Solution for -13.9+r=-22.9 equation: 



-13.9+r=-22.9

We move all terms to the left:

-13.9+r-(-22.9)=0

We add all the numbers together, and all the variables

r+9=0

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

r=-9

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