3(-6b-5)-3b=111

Solution for 3(-6b-5)-3b=111 equation:

Simplifying
3(-6b + -5) + -3b = 111

Reorder the terms:
3(-5 + -6b) + -3b = 111
(-5 * 3 + -6b * 3) + -3b = 111
(-15 + -18b) + -3b = 111

Combine like terms: -18b + -3b = -21b
-15 + -21b = 111

Solving
-15 + -21b = 111

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 + -21b = 111 + 15

Combine like terms: -15 + 15 = 0
0 + -21b = 111 + 15
-21b = 111 + 15

Combine like terms: 111 + 15 = 126
-21b = 126

Divide each side by '-21'.
b = -6

Simplifying
b = -6