6
algebra

If 4x+15=9x104x + 15 = 9x - 10, what is the value of xx?

A

1

B

25

C

2

D

5

Correct Answer: D

Choice Dhoice D is the correct answer.

  1. Subtract 4x: 15=5x1015 = 5x - 10
  2. Add 10: 25=5x25 = 5x
  3. Divide by 5: 5=x5 = x
  4. Verify: 4(5)+15=354(5) + 15 = 35 and 9(5)10=359(5) - 10 = 35

Choice Dhoice C is incorrect because calculation error.

Choice Dhoice B is incorrect because calculation error.

Choice Dhoice C is incorrect because calculation error.