6
algebra

Solve: 2(3x4)5x+22(3x - 4) \geq 5x + 2

A

x10x \geq 10

B

x10x \leq 10

C

x10x \geq -10

D

x10x \leq -10

Correct Answer: A

Choice A is the correct answer. Distribution and multi-step solving are combined in this problem.

  1. Distribute: 2(3x)2(4)5x+22(3x) - 2(4) \geq 5x + 2, giving 6x85x+26x - 8 \geq 5x + 2
  2. Subtract 5x: 6x5x85x5x+26x - 5x - 8 \geq 5x - 5x + 2, giving x82x - 8 \geq 2
  3. Add 8: x10x \geq 10

?�� Strategic Tip: When distributing with parentheses, multiply the coefficient by EVERY term inside.

Choice B is incorrect because it reverses the inequality without justification. Choice C is incorrect because it uses -10 instead of 10, possibly from a sign error. Choice D is incorrect because it combines both wrong sign and wrong direction.