20p+21=p+21

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Solution for 20p+21=p+21 equation: 



20p+21=p+21

We move all terms to the left:

20p+21-(p+21)=0

We get rid of parentheses

20p-p-21+21=0

We add all the numbers together, and all the variables

19p=0

p=0/19

p=0

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