r-18.9=-5.4

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Solution for r-18.9=-5.4 equation: 



r-18.9=-5.4

We move all terms to the left:

r-18.9-(-5.4)=0

We add all the numbers together, and all the variables

r-13.5=0

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

r=13.5

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