25w^2-81f^2=

Solution for 25w^2-81f^2= equation:

Simplifying
25w2 + -81f2 = 0

Reorder the terms:
-81f2 + 25w2 = 0

Solving
-81f2 + 25w2 = 0

Solving for variable 'f'.

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

Add '-25w2' to each side of the equation.
-81f2 + 25w2 + -25w2 = 0 + -25w2

Combine like terms: 25w2 + -25w2 = 0
-81f2 + 0 = 0 + -25w2
-81f2 = 0 + -25w2
Remove the zero:
-81f2 = -25w2

Divide each side by '-81'.
f2 = 0.3086419753w2

Simplifying
f2 = 0.3086419753w2

Take the square root of each side:
f = {-0.555555556w, 0.555555556w}