8
algebra

Solve: 2<3x242 < \frac{3 - x}{2} \leq 4

A

5x<1-5 \leq x < -1

B

1<x5-1 < x \leq 5

C

5<x1-5 < x \leq -1

D

1<x51 < x \leq 5

Correct Answer: A

Choice A is the correct answer. Isolate xx.

  1. Multiply by 2: 4<3x84 < 3 - x \leq 8
  2. Subtract 3: 1<x51 < -x \leq 5
  3. Divide by -1: 1>x5-1 > x \geq -5 (Reverse signs!)
  4. Rewrite: 5x<1-5 \leq x < -1

?�� Strategic Tip: When dividing a compound inequality by a negative, the entire order flips.

Choice B is incorrect because it fails to reverse signs. Choice C is incorrect because it swaps the strict/inclusive endpoints. Choice D is incorrect because it solves incorrectly.