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Simplifying
28y2 + -7 = 0
Reorder the terms:
-7 + 28y2 = 0
Solving
-7 + 28y2 = 0
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 28y2 = 0 + 7
Combine like terms: -7 + 7 = 0
0 + 28y2 = 0 + 7
28y2 = 0 + 7
Combine like terms: 0 + 7 = 7
28y2 = 7
Divide each side by '28'.
y2 = 0.25
Simplifying
y2 = 0.25
Take the square root of each side:
y = {-0.5, 0.5}
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