[p+9]=12

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Solution for [p+9]=12 equation: 


Simplifying
[p + 9] = 12

Reorder the terms:
[9 + p] = 12

Remove brackets around [9 + p]
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 = 3
p = 3

Simplifying
p = 3

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