1

Set 17: Linear Inequalities (Intermediate)

Explanation

Answer: A

Which inequality is equivalent to 2x3>4x+52x - 3 > 4x + 5?

A.

2x>8-2x > 8

✓ Correct
B.

2x<8-2x < 8

C.

2x>82x > 8

D.

x>4x > -4

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Finding equivalent forms helps verify solutions. 1. Subtract 4 x: 2x4x3>4x4x+52x - 4 x - 3 > 4 x - 4 x + 5, giving 2x3>5-2 x - 3 > 5 2. Add 3: 2x>8-2 x > 8 3. Continue to solve: Divide by -2: x<4x < -4 Strategic Tip: Equivalent inequalities have the same solution set but may look different in form. Choice B is incorrect because it has the opposite direction for 2x-2 x. Choice C is incorrect because it has the wrong sign on the coefficient (should be 2x-2 x, not 2x2x). Choice D is incorrect because while this represents the final solution when fully solved, it's not equivalent to the intermediate form requested, and the direction should be <<, not >>.

Key Steps:

The correct answer is 2x>8-2x > 8

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.

🎯 Keep Practicing!

Master all sections for your best SAT score