0.81=ln(y)

Solution for 0.81=ln(y) equation:

Simplifying
0.81 = ln(y)

Multiply ln * y
0.81 = lny

Solving
0.81 = lny

Solving for variable 'l'.

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

Add '-1lny' to each side of the equation.
0.81 + -1lny = lny + -1lny

Combine like terms: lny + -1lny = 0
0.81 + -1lny = 0

Add '-0.81' to each side of the equation.
0.81 + -0.81 + -1lny = 0 + -0.81

Combine like terms: 0.81 + -0.81 = 0.00
0.00 + -1lny = 0 + -0.81
-1lny = 0 + -0.81

Combine like terms: 0 + -0.81 = -0.81
-1lny = -0.81

Divide each side by '-1ny'.
l = 0.81n-1y-1

Simplifying
l = 0.81n-1y-1