To solve for t, we can start by isolating t on one side of the equation. Let's rearrange the equation:
-8m - t = 20m
To isolate t, we can move -8m to the other side:
- t = 20m + 8m
Simplifying the right side:
- t = 28m
To solve for t, we need to multiply both sides of the equation by -1 to get t by itself:
t = -28m
So, the value of t is -28m.