-p-1=p-21

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Solution for -p-1=p-21 equation:


Simplifying
-1p + -1 = p + -21

Reorder the terms:
-1 + -1p = p + -21

Reorder the terms:
-1 + -1p = -21 + p

Solving
-1 + -1p = -21 + 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.
-1 + -1p + -1p = -21 + p + -1p

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

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

Add '1' to each side of the equation.
-1 + 1 + -2p = -21 + 1

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

Combine like terms: -21 + 1 = -20
-2p = -20

Divide each side by '-2'.
p = 10

Simplifying
p = 10

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