9r^2-64d^2=

Solution for 9r^2-64d^2= equation:

Simplifying
9r2 + -64d2 = 0

Reorder the terms:
-64d2 + 9r2 = 0

Solving
-64d2 + 9r2 = 0

Solving for variable 'd'.

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

Add '-9r2' to each side of the equation.
-64d2 + 9r2 + -9r2 = 0 + -9r2

Combine like terms: 9r2 + -9r2 = 0
-64d2 + 0 = 0 + -9r2
-64d2 = 0 + -9r2
Remove the zero:
-64d2 = -9r2

Divide each side by '-64'.
d2 = 0.140625r2

Simplifying
d2 = 0.140625r2

Take the square root of each side:
d = {-0.375r, 0.375r}