5
algebra

If 3(x1)+x2(2x+1)3(x - 1) + x \geq 2(2x + 1), what is the solution?

A

No solution

B

All real numbers

C

x5x \geq 5

D

x5x \leq 5

Correct Answer: A

Choice A is the correct answer. Sometimes variables cancel out, leaving a false statement.

  1. Distribute: 3x3+x4x+23x - 3 + x \geq 4x + 2
  2. Combine like terms: 4x34x+24x - 3 \geq 4x + 2
  3. Subtract 4x: 32-3 \geq 2
  4. Interpret: This statement is FALSE. -3 is never greater than or equal to 2.
  5. Conclusion: There is no value of xx that makes this true.

?�� Strategic Tip: If variables cancel and the remaining statement is false (e.g., 32-3 \geq 2), there is NO solution. If true (e.g., 525 \geq 2), the solution is All Real Numbers.

Choice B is incorrect because the resulting statement 32-3 \geq 2 is false. Choice C is incorrect because it assumes variables don't cancel. Choice D is incorrect because it assumes variables don't cancel.