3r^2+18r+18=3

Solution for 3r^2+18r+18=3 equation:

Simplifying
3r2 + 18r + 18 = 3

Reorder the terms:
18 + 18r + 3r2 = 3

Solving
18 + 18r + 3r2 = 3

Solving for variable 'r'.

Reorder the terms:
18 + -3 + 18r + 3r2 = 3 + -3

Combine like terms: 18 + -3 = 15
15 + 18r + 3r2 = 3 + -3

Combine like terms: 3 + -3 = 0
15 + 18r + 3r2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(5 + 6r + r2) = 0

Factor a trinomial.
3((5 + r)(1 + r)) = 0

Ignore the factor 3.
Subproblem 1
Set the factor '(5 + r)' equal to zero and attempt to solve:

Simplifying
5 + r = 0

Solving
5 + r = 0

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

Add '-5' to each side of the equation.
5 + -5 + r = 0 + -5

Combine like terms: 5 + -5 = 0
0 + r = 0 + -5
r = 0 + -5

Combine like terms: 0 + -5 = -5
r = -5

Simplifying
r = -5
Subproblem 2
Set the factor '(1 + r)' equal to zero and attempt to solve:

Simplifying
1 + r = 0

Solving
1 + r = 0

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

Add '-1' to each side of the equation.
1 + -1 + r = 0 + -1

Combine like terms: 1 + -1 = 0
0 + r = 0 + -1
r = 0 + -1

Combine like terms: 0 + -1 = -1
r = -1

Simplifying
r = -1
Solution
r = {-5, -1}