Solving the inequality 2 + 2d - 19 ≤ 4 + 2d involves simplifying the expression and isolating the variable 'd'. First, combine like terms on both sides of the inequality. This results in 2d - 17 ≤ 4 + 2d. Next, subtract 2d from both sides, which yields -17 ≤ 4. Since -17 is always less than or equal to 4, the inequality is true for all real numbers 'd'. Therefore, the solution is all real numbers.