P-42=-21

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Solution for P-42=-21 equation: 


Simplifying
P + -42 = -21

Reorder the terms:
-42 + P = -21

Solving
-42 + P = -21

Solving for variable 'P'.

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

Add '42' to each side of the equation.
-42 + 42 + P = -21 + 42

Combine like terms: -42 + 42 = 0
0 + P = -21 + 42
P = -21 + 42

Combine like terms: -21 + 42 = 21
P = 21

Simplifying
P = 21

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