Hey can someone check this thanks ( will mark as brainliest however is first!!)

d ≤ 6

The solution set is {6, 5, 4, 3, 2, 1, 0, –1, –2, ....}

Solution:

Given expression is the inequality.

The inequality is .

To solve this inequality:

Multiply by 3 on both sides of the inequality, we get

That is the value of d is 6, 5, 4, 3, 2, 1, 0, –1, –2, ....

The solution set is {6, 5, 4, 3, 2, 1, 0, –1, –2, ....}

Hence d ≤ 6.