p+-9=12

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Solution for p+-9=12 equation: 


Simplifying
p + -9 = 12

Reorder the terms:
-9 + p = 12

Solving
-9 + p = 12

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + p = 12 + 9

Combine like terms: -9 + 9 = 0
0 + p = 12 + 9
p = 12 + 9

Combine like terms: 12 + 9 = 21
p = 21

Simplifying
p = 21

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