-9=p-4p

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Solution for -9=p-4p equation: 



-9=p-4p

We move all terms to the left:

-9-(p-4p)=0

We add all the numbers together, and all the variables

-(-3p)-9=0

We get rid of parentheses

3p-9=0

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

3p=9

p=9/3

p=3

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