p+7=21p=

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Solution for p+7=21p= equation: 



p+7=21p=

We move all terms to the left:

p+7-(21p)=0

We add all the numbers together, and all the variables

-20p+7=0

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

-20p=-7

p=-7/-20

p=7/20

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