225a^2-81b^2=0

Solution for 225a^2-81b^2=0 equation:

Simplifying
225a2 + -81b2 = 0

Solving
225a2 + -81b2 = 0

Solving for variable 'a'.

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

Add '81b2' to each side of the equation.
225a2 + -81b2 + 81b2 = 0 + 81b2

Combine like terms: -81b2 + 81b2 = 0
225a2 + 0 = 0 + 81b2
225a2 = 0 + 81b2
Remove the zero:
225a2 = 81b2

Divide each side by '225'.
a2 = 0.36b2

Simplifying
a2 = 0.36b2

Take the square root of each side:
a = {-0.6b, 0.6b}