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Simplifying
5y2 + -87 = 2
Reorder the terms:
-87 + 5y2 = 2
Solving
-87 + 5y2 = 2
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '87' to each side of the equation.
-87 + 87 + 5y2 = 2 + 87
Combine like terms: -87 + 87 = 0
0 + 5y2 = 2 + 87
5y2 = 2 + 87
Combine like terms: 2 + 87 = 89
5y2 = 89
Divide each side by '5'.
y2 = 17.8
Simplifying
y2 = 17.8
Take the square root of each side:
y = {-4.219004622, 4.219004622}
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