2
algebra

If 7x−4=4x+117x - 4 = 4x + 11, what is the value of xx?

A

15

B

5

C

2.33

D

3

Correct Answer: B

Choice Dhoice B is the correct answer.

  1. Subtract 4x from both sides: 3x−4=113x - 4 = 11
  2. Add 4 to both sides: 3x=153x = 15
  3. Divide by 3: x=5x = 5
  4. Verify: 7(5)−4=317(5) - 4 = 31 and 4(5)+11=314(5) + 11 = 31 ✓

Choice Dhoice C is incorrect because calculation error.

Choice Dhoice D is incorrect because calculation error.

Choice Dhoice C is incorrect because calculation error.

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Linear Functions Set 16