() Solve the equation 13d + 8 = - 1

d =

?

To solve for d, we need to isolate the variable on one side of the equation.

We can do this by subtracting 8 from both sides of the equation:

13d + 8 - 8 = -1 - 8

This simplifies to:

13d = -9

Finally, we can solve for d by dividing both sides of the equation by 13:

d = -9/13