-2(-7b-3)+b=-99

Solution for -2(-7b-3)+b=-99 equation:

Simplifying
-2(-7b + -3) + b = -99

Reorder the terms:
-2(-3 + -7b) + b = -99
(-3 * -2 + -7b * -2) + b = -99
(6 + 14b) + b = -99

Combine like terms: 14b + b = 15b
6 + 15b = -99

Solving
6 + 15b = -99

Solving for variable 'b'.

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

Add '-6' to each side of the equation.
6 + -6 + 15b = -99 + -6

Combine like terms: 6 + -6 = 0
0 + 15b = -99 + -6
15b = -99 + -6

Combine like terms: -99 + -6 = -105
15b = -105

Divide each side by '15'.
b = -7

Simplifying
b = -7