21-3p=6

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Solution for 21-3p=6 equation: 


Simplifying
21 + -3p = 6

Solving
21 + -3p = 6

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 + -3p = 6 + -21

Combine like terms: 21 + -21 = 0
0 + -3p = 6 + -21
-3p = 6 + -21

Combine like terms: 6 + -21 = -15
-3p = -15

Divide each side by '-3'.
p = 5

Simplifying
p = 5

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