123=-3(-7p-6)

Solution for 123=-3(-7p-6) equation:

Simplifying
123 = -3(-7p + -6)

Reorder the terms:
123 = -3(-6 + -7p)
123 = (-6 * -3 + -7p * -3)
123 = (18 + 21p)

Solving
123 = 18 + 21p

Solving for variable 'p'.

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

Add '-21p' to each side of the equation.
123 + -21p = 18 + 21p + -21p

Combine like terms: 21p + -21p = 0
123 + -21p = 18 + 0
123 + -21p = 18

Add '-123' to each side of the equation.
123 + -123 + -21p = 18 + -123

Combine like terms: 123 + -123 = 0
0 + -21p = 18 + -123
-21p = 18 + -123

Combine like terms: 18 + -123 = -105
-21p = -105

Divide each side by '-21'.
p = 5

Simplifying
p = 5