3p-15=21

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Solution for 3p-15=21 equation: 


Simplifying
3p + -15 = 21

Reorder the terms:
-15 + 3p = 21

Solving
-15 + 3p = 21

Solving for variable 'p'.

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

Add '15' to each side of the equation.
-15 + 15 + 3p = 21 + 15

Combine like terms: -15 + 15 = 0
0 + 3p = 21 + 15
3p = 21 + 15

Combine like terms: 21 + 15 = 36
3p = 36

Divide each side by '3'.
p = 12

Simplifying
p = 12

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