y^2-15=-6

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Solution for y^2-15=-6 equation: 


Simplifying
y2 + -15 = -6

Reorder the terms:
-15 + y2 = -6

Solving
-15 + y2 = -6

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + y2 = -6 + 15

Combine like terms: -15 + 15 = 0
0 + y2 = -6 + 15
y2 = -6 + 15

Combine like terms: -6 + 15 = 9
y2 = 9

Simplifying
y2 = 9

Take the square root of each side:
y = {-3, 3}

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