What is 29+d=54; 24,25,26, how do I solve it?

d=25 because you would subtract 29 on both sides of the = so you can get your variable, d, alone. So, 54 minus (-) 29 equals 25.

First, set up your equation (we'll start with the first number you listed)

29+d=54

Next, subtract 29 from both sides

d=25

Now do the same for each number; I will demonstrate anyways.

29+d=24

d=-5

29+d=25

d=-4

29+d=26

d=-3