3
Answer: ASet 6: Linear Inequalities
Explanation
Solve:
A.
✓ Correct
B.
C.
D.
Detailed Explanation
Choice A is correct. Choice A is the correct answer. Collect variables on one side. 1. Add 3 x: 2. Subtract 5: , or Alternatively: 1. Add 2 x: 2. Subtract 7: 3. Divide by -1: (reverse sign) Strategic Tip: Both methods work. Adding avoids dividing by a negative. Choice B is incorrect because it reverses the inequality direction. Choice C is incorrect because it uses negative 2. Choice D is incorrect because it uses negative 2 and wrong direction.
Key Steps:
•
The correct answer is
Why others are wrong:
B: Choice B is incorrect and may result from a calculation error.
C: Choice C is incorrect and may result from a calculation error.
D: Choice D is incorrect and may result from a calculation error.
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