3(4b+5)+3b=

Solution for 3(4b+5)+3b= equation:

Simplifying
3(4b + 5) + 3b = 0

Reorder the terms:
3(5 + 4b) + 3b = 0
(5 * 3 + 4b * 3) + 3b = 0
(15 + 12b) + 3b = 0

Combine like terms: 12b + 3b = 15b
15 + 15b = 0

Solving
15 + 15b = 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 + 15b = 0 + -15

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

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

Divide each side by '15'.
b = -1

Simplifying
b = -1