3r+6+9r=24

Solution for 3r+6+9r=24 equation:

Simplifying
3r + 6 + 9r = 24

Reorder the terms:
6 + 3r + 9r = 24

Combine like terms: 3r + 9r = 12r
6 + 12r = 24

Solving
6 + 12r = 24

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 + 12r = 24 + -6

Combine like terms: 6 + -6 = 0
0 + 12r = 24 + -6
12r = 24 + -6

Combine like terms: 24 + -6 = 18
12r = 18

Divide each side by '12'.
r = 1.5

Simplifying
r = 1.5