9=p-12

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Solution for 9=p-12 equation:


Simplifying
9 = p + -12

Reorder the terms:
9 = -12 + p

Solving
9 = -12 + p

Solving for variable 'p'.

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

Add '-1p' to each side of the equation.
9 + -1p = -12 + p + -1p

Combine like terms: p + -1p = 0
9 + -1p = -12 + 0
9 + -1p = -12

Add '-9' to each side of the equation.
9 + -9 + -1p = -12 + -9

Combine like terms: 9 + -9 = 0
0 + -1p = -12 + -9
-1p = -12 + -9

Combine like terms: -12 + -9 = -21
-1p = -21

Divide each side by '-1'.
p = 21

Simplifying
p = 21

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