r/2-2=4

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Solution for r/2-2=4 equation: 



r/2-2=4

We move all terms to the left:

r/2-2-(4)=0

We add all the numbers together, and all the variables

r/2-6=0

We multiply all the terms by the denominator


r-6*2=0

We add all the numbers together, and all the variables

r-12=0

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

r=12

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