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Simplifying
3y2 + -18 = 180
Reorder the terms:
-18 + 3y2 = 180
Solving
-18 + 3y2 = 180
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '18' to each side of the equation.
-18 + 18 + 3y2 = 180 + 18
Combine like terms: -18 + 18 = 0
0 + 3y2 = 180 + 18
3y2 = 180 + 18
Combine like terms: 180 + 18 = 198
3y2 = 198
Divide each side by '3'.
y2 = 66
Simplifying
y2 = 66
Take the square root of each side:
y = {-8.124038405, 8.124038405}
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