10 = - 1/8 * d
To find the value of d in the equation 10 = -1/8 * d, we need to isolate d.
First, we can multiply both sides of the equation by -8 to eliminate the fraction:
10 * -8 = (-1/8 * d) * -8
-80 = d
Therefore, the value of d in the equation is -80.