9(r+8)+4r=

Solution for 9(r+8)+4r= equation:

Simplifying
9(r + 8) + 4r = 0

Reorder the terms:
9(8 + r) + 4r = 0
(8 * 9 + r * 9) + 4r = 0
(72 + 9r) + 4r = 0

Combine like terms: 9r + 4r = 13r
72 + 13r = 0

Solving
72 + 13r = 0

Solving for variable 'r'.

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

Add '-72' to each side of the equation.
72 + -72 + 13r = 0 + -72

Combine like terms: 72 + -72 = 0
0 + 13r = 0 + -72
13r = 0 + -72

Combine like terms: 0 + -72 = -72
13r = -72

Divide each side by '13'.
r = -5.538461538

Simplifying
r = -5.538461538