-7-2p=-21

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Solution for -7-2p=-21 equation: 



-7-2p=-21

We move all terms to the left:

-7-2p-(-21)=0

We add all the numbers together, and all the variables

-2p+14=0

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

-2p=-14

p=-14/-2

p=+7

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