r/6+21=3

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Solution for r/6+21=3 equation: 



r/6+21=3

We move all terms to the left:

r/6+21-(3)=0

We add all the numbers together, and all the variables

r/6+18=0

We multiply all the terms by the denominator


r+18*6=0

We add all the numbers together, and all the variables

r+108=0

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

r=-108

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