-6p+-15+-3p+21=

Solution for -6p+-15+-3p+21= equation:

Simplifying
-6p + -15 + -3p + 21 = 0

Reorder the terms:
-15 + 21 + -6p + -3p = 0

Combine like terms: -15 + 21 = 6
6 + -6p + -3p = 0

Combine like terms: -6p + -3p = -9p
6 + -9p = 0

Solving
6 + -9p = 0

Solving for variable 'p'.

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

Add '-6' to each side of the equation.
6 + -6 + -9p = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -9p = 0 + -6
-9p = 0 + -6

Combine like terms: 0 + -6 = -6
-9p = -6

Divide each side by '-9'.
p = 0.6666666667

Simplifying
p = 0.6666666667