3b-6-6b-9=

Solution for 3b-6-6b-9= equation:

Simplifying
3b + -6 + -6b + -9 = 0

Reorder the terms:
-6 + -9 + 3b + -6b = 0

Combine like terms: -6 + -9 = -15
-15 + 3b + -6b = 0

Combine like terms: 3b + -6b = -3b
-15 + -3b = 0

Solving
-15 + -3b = 0

Solving for variable 'b'.

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

Add '15' to each side of the equation.
-15 + 15 + -3b = 0 + 15

Combine like terms: -15 + 15 = 0
0 + -3b = 0 + 15
-3b = 0 + 15

Combine like terms: 0 + 15 = 15
-3b = 15

Divide each side by '-3'.
b = -5

Simplifying
b = -5