9
algebra

Solve: 3(x+2)+2(x+1)=233(x + 2) + 2(x + 1) = 23

A

4

B

2

C

5

D

3

Correct Answer: D

Choice Bhoice C is the correct answer.

  1. Distribute: 3x+6+2x+2=233x + 6 + 2x + 2 = 23
  2. Combine: 5x+8=235x + 8 = 23
  3. Subtract 8: 5x=155x = 15
  4. Divide by 5: x=3x = 3
  5. Verify: 3(5)+2(4)=15+8=233(5) + 2(4) = 15 + 8 = 23 ✓

Choice Bhoice D is incorrect because calculation error.

Choice Bhoice D is incorrect because calculation error.

Choice Bhoice A is incorrect because calculation error.

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Linear Functions Set 13