-3(1+7p)=-129

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Solution for -3(1+7p)=-129 equation: 


Simplifying
-3(1 + 7p) = -129
(1 * -3 + 7p * -3) = -129
(-3 + -21p) = -129

Solving
-3 + -21p = -129

Solving for variable 'p'.

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

Add '3' to each side of the equation.
-3 + 3 + -21p = -129 + 3

Combine like terms: -3 + 3 = 0
0 + -21p = -129 + 3
-21p = -129 + 3

Combine like terms: -129 + 3 = -126
-21p = -126

Divide each side by '-21'.
p = 6

Simplifying
p = 6

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