p-4+p=20

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Solution for p-4+p=20 equation: 


Simplifying
p + -4 + p = 20

Reorder the terms:
-4 + p + p = 20

Combine like terms: p + p = 2p
-4 + 2p = 20

Solving
-4 + 2p = 20

Solving for variable 'p'.

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

Add '4' to each side of the equation.
-4 + 4 + 2p = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 2p = 20 + 4
2p = 20 + 4

Combine like terms: 20 + 4 = 24
2p = 24

Divide each side by '2'.
p = 12

Simplifying
p = 12

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