p+7=3p-9

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Solution for p+7=3p-9 equation: 



p+7=3p-9

We move all terms to the left:

p+7-(3p-9)=0

We get rid of parentheses

p-3p+9+7=0

We add all the numbers together, and all the variables

-2p+16=0

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

-2p=-16

p=-16/-2

p=+8

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