36y^2-1=15

Solution for 36y^2-1=15 equation:

Simplifying
36y2 + -1 = 15

Reorder the terms:
-1 + 36y2 = 15

Solving
-1 + 36y2 = 15

Solving for variable 'y'.

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

Add '1' to each side of the equation.
-1 + 1 + 36y2 = 15 + 1

Combine like terms: -1 + 1 = 0
0 + 36y2 = 15 + 1
36y2 = 15 + 1

Combine like terms: 15 + 1 = 16
36y2 = 16

Divide each side by '36'.
y2 = 0.4444444444

Simplifying
y2 = 0.4444444444

Take the square root of each side:
y = {-0.666666667, 0.666666667}