9y^2-8=18

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Solution for 9y^2-8=18 equation:


Simplifying
9y2 + -8 = 18

Reorder the terms:
-8 + 9y2 = 18

Solving
-8 + 9y2 = 18

Solving for variable 'y'.

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

Add '8' to each side of the equation.
-8 + 8 + 9y2 = 18 + 8

Combine like terms: -8 + 8 = 0
0 + 9y2 = 18 + 8
9y2 = 18 + 8

Combine like terms: 18 + 8 = 26
9y2 = 26

Divide each side by '9'.
y2 = 2.888888889

Simplifying
y2 = 2.888888889

Take the square root of each side:
y = {-1.699673171, 1.699673171}

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