81a^2-9b^2=0

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Solution for 81a^2-9b^2=0 equation:


Simplifying
81a2 + -9b2 = 0

Solving
81a2 + -9b2 = 0

Solving for variable 'a'.

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

Add '9b2' to each side of the equation.
81a2 + -9b2 + 9b2 = 0 + 9b2

Combine like terms: -9b2 + 9b2 = 0
81a2 + 0 = 0 + 9b2
81a2 = 0 + 9b2
Remove the zero:
81a2 = 9b2

Divide each side by '81'.
a2 = 0.1111111111b2

Simplifying
a2 = 0.1111111111b2

Take the square root of each side:
a = {-0.333333333b, 0.333333333b}

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