16r^2-25a^2=

Solution for 16r^2-25a^2= equation:

Simplifying
16r2 + -25a2 = 0

Reorder the terms:
-25a2 + 16r2 = 0

Solving
-25a2 + 16r2 = 0

Solving for variable 'a'.

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

Add '-16r2' to each side of the equation.
-25a2 + 16r2 + -16r2 = 0 + -16r2

Combine like terms: 16r2 + -16r2 = 0
-25a2 + 0 = 0 + -16r2
-25a2 = 0 + -16r2
Remove the zero:
-25a2 = -16r2

Divide each side by '-25'.
a2 = 0.64r2

Simplifying
a2 = 0.64r2

Take the square root of each side:
a = {-0.8r, 0.8r}