-5=-7y^2

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Solution for -5=-7y^2 equation:


Simplifying
-5 = -7y2

Solving
-5 = -7y2

Solving for variable 'y'.

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

Add '7y2' to each side of the equation.
-5 + 7y2 = -7y2 + 7y2

Combine like terms: -7y2 + 7y2 = 0
-5 + 7y2 = 0

Add '5' to each side of the equation.
-5 + 5 + 7y2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 7y2 = 0 + 5
7y2 = 0 + 5

Combine like terms: 0 + 5 = 5
7y2 = 5

Divide each side by '7'.
y2 = 0.7142857143

Simplifying
y2 = 0.7142857143

Take the square root of each side:
y = {-0.845154255, 0.845154255}

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