Find the value of d that makes the equation true:

d - 8 = 5.

d = 10

d = 11

d = 12

d = 13

To answer this, you need to get "d" on one side by itself. To do this, add 8 to both sides of the equation.

d - 8 + 8 = 5 + 8

-8 and + 8 cancel out leaving:

d = 13

Your answer is d = 13