81a^2-100f^2=0

Solution for 81a^2-100f^2=0 equation:

Simplifying
81a2 + -100f2 = 0

Solving
81a2 + -100f2 = 0

Solving for variable 'a'.

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

Add '100f2' to each side of the equation.
81a2 + -100f2 + 100f2 = 0 + 100f2

Combine like terms: -100f2 + 100f2 = 0
81a2 + 0 = 0 + 100f2
81a2 = 0 + 100f2
Remove the zero:
81a2 = 100f2

Divide each side by '81'.
a2 = 1.234567901f2

Simplifying
a2 = 1.234567901f2

Take the square root of each side:
a = {-1.111111111f, 1.111111111f}