p+21=2p

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Solution for p+21=2p equation:


Simplifying
p + 21 = 2p

Reorder the terms:
21 + p = 2p

Solving
21 + p = 2p

Solving for variable 'p'.

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

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

Combine like terms: p + -2p = -1p
21 + -1p = 2p + -2p

Combine like terms: 2p + -2p = 0
21 + -1p = 0

Add '-21' to each side of the equation.
21 + -21 + -1p = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -1p = 0 + -21
-1p = 0 + -21

Combine like terms: 0 + -21 = -21
-1p = -21

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

Simplifying
p = 21

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