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

Solution for -8(5+b)-1=-89 equation:

Simplifying
-8(5 + b) + -1 = -89
(5 * -8 + b * -8) + -1 = -89
(-40 + -8b) + -1 = -89

Reorder the terms:
-40 + -1 + -8b = -89

Combine like terms: -40 + -1 = -41
-41 + -8b = -89

Solving
-41 + -8b = -89

Solving for variable 'b'.

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

Add '41' to each side of the equation.
-41 + 41 + -8b = -89 + 41

Combine like terms: -41 + 41 = 0
0 + -8b = -89 + 41
-8b = -89 + 41

Combine like terms: -89 + 41 = -48
-8b = -48

Divide each side by '-8'.
b = 6

Simplifying
b = 6