-3(p+7)=9

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Solution for -3(p+7)=9 equation: 


Simplifying
-3(p + 7) = 9

Reorder the terms:
-3(7 + p) = 9
(7 * -3 + p * -3) = 9
(-21 + -3p) = 9

Solving
-21 + -3p = 9

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 = 9 + 21

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

Combine like terms: 9 + 21 = 30
-3p = 30

Divide each side by '-3'.
p = -10

Simplifying
p = -10

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