39=3(p-1)

Solution for 39=3(p-1) equation:

Simplifying
39 = 3(p + -1)

Reorder the terms:
39 = 3(-1 + p)
39 = (-1 * 3 + p * 3)
39 = (-3 + 3p)

Solving
39 = -3 + 3p

Solving for variable 'p'.

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

Add '-3p' to each side of the equation.
39 + -3p = -3 + 3p + -3p

Combine like terms: 3p + -3p = 0
39 + -3p = -3 + 0
39 + -3p = -3

Add '-39' to each side of the equation.
39 + -39 + -3p = -3 + -39

Combine like terms: 39 + -39 = 0
0 + -3p = -3 + -39
-3p = -3 + -39

Combine like terms: -3 + -39 = -42
-3p = -42

Divide each side by '-3'.
p = 14

Simplifying
p = 14