4v^2-9d^2=0

Solution for 4v^2-9d^2=0 equation:

Simplifying
4v2 + -9d2 = 0

Reorder the terms:
-9d2 + 4v2 = 0

Solving
-9d2 + 4v2 = 0

Solving for variable 'd'.

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

Add '-4v2' to each side of the equation.
-9d2 + 4v2 + -4v2 = 0 + -4v2

Combine like terms: 4v2 + -4v2 = 0
-9d2 + 0 = 0 + -4v2
-9d2 = 0 + -4v2
Remove the zero:
-9d2 = -4v2

Divide each side by '-9'.
d2 = 0.4444444444v2

Simplifying
d2 = 0.4444444444v2

Take the square root of each side:
d = {-0.666666667v, 0.666666667v}