81r^2+2=3

Solution for 81r^2+2=3 equation:

Simplifying
81r2 + 2 = 3

Reorder the terms:
2 + 81r2 = 3

Solving
2 + 81r2 = 3

Solving for variable 'r'.

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

Add '-2' to each side of the equation.
2 + -2 + 81r2 = 3 + -2

Combine like terms: 2 + -2 = 0
0 + 81r2 = 3 + -2
81r2 = 3 + -2

Combine like terms: 3 + -2 = 1
81r2 = 1

Divide each side by '81'.
r2 = 0.01234567901

Simplifying
r2 = 0.01234567901

Take the square root of each side:
r = {-0.111111111, 0.111111111}