3r^2-147=0

Solution for 3r^2-147=0 equation:

Simplifying
3r2 + -147 = 0

Reorder the terms:
-147 + 3r2 = 0

Solving
-147 + 3r2 = 0

Solving for variable 'r'.

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

Add '147' to each side of the equation.
-147 + 147 + 3r2 = 0 + 147

Combine like terms: -147 + 147 = 0
0 + 3r2 = 0 + 147
3r2 = 0 + 147

Combine like terms: 0 + 147 = 147
3r2 = 147

Divide each side by '3'.
r2 = 49

Simplifying
r2 = 49

Take the square root of each side:
r = {-7, 7}