0.81=0.9*h

Solution for 0.81=0.9*h equation:

Simplifying
0.81 = 0.9h

Solving
0.81 = 0.9h

Solving for variable 'h'.

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

Add '-0.9h' to each side of the equation.
0.81 + -0.9h = 0.9h + -0.9h

Combine like terms: 0.9h + -0.9h = 0.0
0.81 + -0.9h = 0.0

Add '-0.81' to each side of the equation.
0.81 + -0.81 + -0.9h = 0.0 + -0.81

Combine like terms: 0.81 + -0.81 = 0.00
0.00 + -0.9h = 0.0 + -0.81
-0.9h = 0.0 + -0.81

Combine like terms: 0.0 + -0.81 = -0.81
-0.9h = -0.81

Divide each side by '-0.9'.
h = 0.9

Simplifying
h = 0.9