r-18.9=-3.2

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Solution for r-18.9=-3.2 equation: 



r-18.9=-3.2

We move all terms to the left:

r-18.9-(-3.2)=0

We add all the numbers together, and all the variables

r-15.7=0

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

r=15.7

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