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Simplifying
9y2 + -15 = 2
Reorder the terms:
-15 + 9y2 = 2
Solving
-15 + 9y2 = 2
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 + 9y2 = 2 + 15
Combine like terms: -15 + 15 = 0
0 + 9y2 = 2 + 15
9y2 = 2 + 15
Combine like terms: 2 + 15 = 17
9y2 = 17
Divide each side by '9'.
y2 = 1.888888889
Simplifying
y2 = 1.888888889
Take the square root of each side:
y = {-1.374368542, 1.374368542}
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