Answer:
The solutions are: -12, -7, -8, -7.1
d ≤ -7
Explanation:
-d ≥ 7
Try d = -12
-d ≥ 7
-(-12) ≥ 7
12 ≥ 7
True.
-12 is a solution of the inequality.
Try d = -7
-d ≥ 7
-(-7) ≥ 7
7 ≥ 7
True.
-7 is a solution of the inequality.
Try d = -2
-d ≥ 7
-(-2) ≥ 7
2 ≥ 7
False.
-2 is not a solution of the inequality.
Do the above process to all given numbers.
The solutions are:
-12, -7, -8, -7.1
-d ≥ 7
Divide both sides by -1. remember to flip the inequality sign.
d ≤ -7