(1+3r)(6)=

Solution for (1+3r)(6)= equation:

Simplifying
(1 + 3r)(6) = 0

Reorder the terms for easier multiplication:
6(1 + 3r) = 0
(1 * 6 + 3r * 6) = 0
(6 + 18r) = 0

Solving
6 + 18r = 0

Solving for variable 'r'.

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

Add '-6' to each side of the equation.
6 + -6 + 18r = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 18r = 0 + -6
18r = 0 + -6

Combine like terms: 0 + -6 = -6
18r = -6

Divide each side by '18'.
r = -0.3333333333

Simplifying
r = -0.3333333333