1281=21(p+21)

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Solution for 1281=21(p+21) equation: 



1281=21(p+21)

We move all terms to the left:

1281-(21(p+21))=0



We calculate terms in parentheses: -(21(p+21)), so:

21(p+21)

We multiply parentheses

21p+441

Back to the equation:

-(21p+441)



We get rid of parentheses

-21p-441+1281=0

We add all the numbers together, and all the variables

-21p+840=0

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

-21p=-840

p=-840/-21

p=+40

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