81=16m^2

Solution for 81=16m^2 equation:

Simplifying
81 = 16m2

Solving
81 = 16m2

Solving for variable 'm'.

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

Add '-16m2' to each side of the equation.
81 + -16m2 = 16m2 + -16m2

Combine like terms: 16m2 + -16m2 = 0
81 + -16m2 = 0

Add '-81' to each side of the equation.
81 + -81 + -16m2 = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -16m2 = 0 + -81
-16m2 = 0 + -81

Combine like terms: 0 + -81 = -81
-16m2 = -81

Divide each side by '-16'.
m2 = 5.0625

Simplifying
m2 = 5.0625

Take the square root of each side:
m = {-2.25, 2.25}