121-9y^2=0

Solution for 121-9y^2=0 equation:

Simplifying
121 + -9y2 = 0

Solving
121 + -9y2 = 0

Solving for variable 'y'.

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

Add '-121' to each side of the equation.
121 + -121 + -9y2 = 0 + -121

Combine like terms: 121 + -121 = 0
0 + -9y2 = 0 + -121
-9y2 = 0 + -121

Combine like terms: 0 + -121 = -121
-9y2 = -121

Divide each side by '-9'.
y2 = 13.44444444

Simplifying
y2 = 13.44444444

Take the square root of each side:
y = {-3.666666666, 3.666666666}