0.72=-0.9p

Solution for 0.72=-0.9p equation:

Simplifying
0.72 = -0.9p

Solving
0.72 = -0.9p

Solving for variable 'p'.

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

Add '0.9p' to each side of the equation.
0.72 + 0.9p = -0.9p + 0.9p

Combine like terms: -0.9p + 0.9p = 0.0
0.72 + 0.9p = 0.0

Add '-0.72' to each side of the equation.
0.72 + -0.72 + 0.9p = 0.0 + -0.72

Combine like terms: 0.72 + -0.72 = 0.00
0.00 + 0.9p = 0.0 + -0.72
0.9p = 0.0 + -0.72

Combine like terms: 0.0 + -0.72 = -0.72
0.9p = -0.72

Divide each side by '0.9'.
p = -0.8

Simplifying
p = -0.8