Choice A is the correct answer. Solving two-step inequalities systematically prevents errors.

1. Add 7: $3x - 7 + 7 \leq 11 + 7$, giving $3x \leq 18$
2. Divide by 3: $\frac{3x}{3} \leq \frac{18}{3}$, giving $x \leq 6$
3. Interpretation: All values up to and including 6 satisfy this inequality

?�� Strategic Tip: Always perform inverse operations in the correct order: handle addition/subtraction before multiplication/division.

Choice B is incorrect because it reverses the inequality sign without mathematical justification. Choice C is incorrect because it appears to subtract 7 from 11 to get 4, then divide by 3, skipping proper steps. Choice D is incorrect because it shows only the intermediate step $3x \leq 18$ without dividing by 3.