r/2+28=21

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Solution for r/2+28=21 equation: 



r/2+28=21

We move all terms to the left:

r/2+28-(21)=0

We add all the numbers together, and all the variables

r/2+7=0

We multiply all the terms by the denominator


r+7*2=0

We add all the numbers together, and all the variables

r+14=0

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

r=-14

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