4-2(5b-1)=86

Solution for 4-2(5b-1)=86 equation:

Simplifying
4 + -2(5b + -1) = 86

Reorder the terms:
4 + -2(-1 + 5b) = 86
4 + (-1 * -2 + 5b * -2) = 86
4 + (2 + -10b) = 86

Combine like terms: 4 + 2 = 6
6 + -10b = 86

Solving
6 + -10b = 86

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 + -10b = 86 + -6

Combine like terms: 6 + -6 = 0
0 + -10b = 86 + -6
-10b = 86 + -6

Combine like terms: 86 + -6 = 80
-10b = 80

Divide each side by '-10'.
b = -8

Simplifying
b = -8