7r^2-3=0

Solution for 7r^2-3=0 equation:

Simplifying
7r2 + -3 = 0

Reorder the terms:
-3 + 7r2 = 0

Solving
-3 + 7r2 = 0

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + 7r2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 7r2 = 0 + 3
7r2 = 0 + 3

Combine like terms: 0 + 3 = 3
7r2 = 3

Divide each side by '7'.
r2 = 0.4285714286

Simplifying
r2 = 0.4285714286

Take the square root of each side:
r = {-0.654653671, 0.654653671}