4y^2-20=5

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Solution for 4y^2-20=5 equation: 


Simplifying
4y2 + -20 = 5

Reorder the terms:
-20 + 4y2 = 5

Solving
-20 + 4y2 = 5

Solving for variable 'y'.

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

Add '20' to each side of the equation.
-20 + 20 + 4y2 = 5 + 20

Combine like terms: -20 + 20 = 0
0 + 4y2 = 5 + 20
4y2 = 5 + 20

Combine like terms: 5 + 20 = 25
4y2 = 25

Divide each side by '4'.
y2 = 6.25

Simplifying
y2 = 6.25

Take the square root of each side:
y = {-2.5, 2.5}

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