9a^2-121=0

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

Simplifying
9a2 + -121 = 0

Reorder the terms:
-121 + 9a2 = 0

Solving
-121 + 9a2 = 0

Solving for variable 'a'.

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

Add '121' to each side of the equation.
-121 + 121 + 9a2 = 0 + 121

Combine like terms: -121 + 121 = 0
0 + 9a2 = 0 + 121
9a2 = 0 + 121

Combine like terms: 0 + 121 = 121
9a2 = 121

Divide each side by '9'.
a2 = 13.44444444

Simplifying
a2 = 13.44444444

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