r+18/2=4

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Solution for r+18/2=4 equation: 



r+18/2=4

We move all terms to the left:

r+18/2-(4)=0

determiningTheFunctionDomain
r-4+18/2=0

We add all the numbers together, and all the variables

r+5=0

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

r=-5

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