3p+21-8=-12

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Solution for 3p+21-8=-12 equation: 


Simplifying
3p + 21 + -8 = -12

Reorder the terms:
21 + -8 + 3p = -12

Combine like terms: 21 + -8 = 13
13 + 3p = -12

Solving
13 + 3p = -12

Solving for variable 'p'.

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

Add '-13' to each side of the equation.
13 + -13 + 3p = -12 + -13

Combine like terms: 13 + -13 = 0
0 + 3p = -12 + -13
3p = -12 + -13

Combine like terms: -12 + -13 = -25
3p = -25

Divide each side by '3'.
p = -8.333333333

Simplifying
p = -8.333333333

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