r/4=30

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Solution for r/4=30 equation: 



r/4=30

We move all terms to the left:

r/4-(30)=0

We multiply all the terms by the denominator


r-30*4=0

We add all the numbers together, and all the variables

r-120=0

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

r=120

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