6=-.125(8)+b

Solution for 6=-.125(8)+b equation:

Simplifying
6 = -0.125(8) + b

Multiply -0.125 * 8
6 = -1 + b

Solving
6 = -1 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
6 + -1b = -1 + b + -1b

Combine like terms: b + -1b = 0
6 + -1b = -1 + 0
6 + -1b = -1

Add '-6' to each side of the equation.
6 + -6 + -1b = -1 + -6

Combine like terms: 6 + -6 = 0
0 + -1b = -1 + -6
-1b = -1 + -6

Combine like terms: -1 + -6 = -7
-1b = -7

Divide each side by '-1'.
b = 7

Simplifying
b = 7