81x^2-100y^2=0

Solution for 81x^2-100y^2=0 equation:

Simplifying
81x2 + -100y2 = 0

Solving
81x2 + -100y2 = 0

Solving for variable 'x'.

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

Add '100y2' to each side of the equation.
81x2 + -100y2 + 100y2 = 0 + 100y2

Combine like terms: -100y2 + 100y2 = 0
81x2 + 0 = 0 + 100y2
81x2 = 0 + 100y2
Remove the zero:
81x2 = 100y2

Divide each side by '81'.
x2 = 1.234567901y2

Simplifying
x2 = 1.234567901y2

Take the square root of each side:
x = {-1.111111111y, 1.111111111y}