-18=-2(p+9)+-12

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Solution for -18=-2(p+9)+-12 equation: 



-18=-2(p+9)+-12

We move all terms to the left:

-18-(-2(p+9)+-12)=0

We use the square of the difference formula

-(-2(p+9)-12)-18=0



We calculate terms in parentheses: -(-2(p+9)-12), so:

-2(p+9)-12

We multiply parentheses

-2p-18-12

We add all the numbers together, and all the variables

-2p-30

Back to the equation:

-(-2p-30)



We get rid of parentheses

2p+30-18=0

We add all the numbers together, and all the variables

2p+12=0

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

2p=-12

p=-12/2

p=-6

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