21-3p=-7-5(-7+2)

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Solution for 21-3p=-7-5(-7+2) equation: 



21-3p=-7-5(-7+2)

We move all terms to the left:

21-3p-(-7-5(-7+2))=0

We add all the numbers together, and all the variables

-3p+21-(-7-5(-5))=0

We add all the numbers together, and all the variables

-3p+3=0

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

-3p=-3

p=-3/-3

p=1

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