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What is the solution of (\frac{3x}{4}-2>\frac{x}{2}+5)?

Answer and explanation

Correct answer: (x>28)

The correct answer is option B: x > 28. Start with 3x/4 − 2 > x/2 + 5. Move the variable terms to the left and constants to the right: 3x/4 − x/2 > 7. Since x/2 = 2x/4, the left side becomes x/4. Therefore x/4 > 7. Multiply by positive 4, so x > 28. Option B is exactly this result. Option A, x < 28, reverses the direction and would include values that do not work, such as x = 0. Option C, x > 7/4, comes from mishandling the coefficient and is much too weak; x = 2 would satisfy it but fail the original inequality. Option D, x ≤ 28, both reverses the direction and incorrectly includes equality. Equality is not allowed because the original sign is strictly greater than. Memory cue: simplify the coefficient difference first: 3/4 − 1/2 = 1/4, then multiply by 4.

Related tags

Linear InequalitiesFractionsAlgebraic Solution

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