9p-21=-21+3p

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Solution for 9p-21=-21+3p equation:


Simplifying
9p + -21 = -21 + 3p

Reorder the terms:
-21 + 9p = -21 + 3p

Add '21' to each side of the equation.
-21 + 21 + 9p = -21 + 21 + 3p

Combine like terms: -21 + 21 = 0
0 + 9p = -21 + 21 + 3p
9p = -21 + 21 + 3p

Combine like terms: -21 + 21 = 0
9p = 0 + 3p
9p = 3p

Solving
9p = 3p

Solving for variable 'p'.

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

Add '-3p' to each side of the equation.
9p + -3p = 3p + -3p

Combine like terms: 9p + -3p = 6p
6p = 3p + -3p

Combine like terms: 3p + -3p = 0
6p = 0

Divide each side by '6'.
p = 0

Simplifying
p = 0

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