-8b-(5b-2)=-89

Solution for -8b-(5b-2)=-89 equation:

Simplifying
-8b + -1(5b + -2) = -89

Reorder the terms:
-8b + -1(-2 + 5b) = -89
-8b + (-2 * -1 + 5b * -1) = -89
-8b + (2 + -5b) = -89

Reorder the terms:
2 + -8b + -5b = -89

Combine like terms: -8b + -5b = -13b
2 + -13b = -89

Solving
2 + -13b = -89

Solving for variable 'b'.

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

Add '-2' to each side of the equation.
2 + -2 + -13b = -89 + -2

Combine like terms: 2 + -2 = 0
0 + -13b = -89 + -2
-13b = -89 + -2

Combine like terms: -89 + -2 = -91
-13b = -91

Divide each side by '-13'.
b = 7

Simplifying
b = 7