3r^2+3=30

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Solution for 3r^2+3=30 equation: 


Simplifying
3r2 + 3 = 30

Reorder the terms:
3 + 3r2 = 30

Solving
3 + 3r2 = 30

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 + 3r2 = 30 + -3

Combine like terms: 3 + -3 = 0
0 + 3r2 = 30 + -3
3r2 = 30 + -3

Combine like terms: 30 + -3 = 27
3r2 = 27

Divide each side by '3'.
r2 = 9

Simplifying
r2 = 9

Take the square root of each side:
r = {-3, 3}

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