p+21=4

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Solution for p+21=4 equation: 


Simplifying
p + 21 = 4

Reorder the terms:
21 + p = 4

Solving
21 + p = 4

Solving for variable 'p'.

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

Add '-21' to each side of the equation.
21 + -21 + p = 4 + -21

Combine like terms: 21 + -21 = 0
0 + p = 4 + -21
p = 4 + -21

Combine like terms: 4 + -21 = -17
p = -17

Simplifying
p = -17

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