Multiple choice

Which of the following options represents the value of x in the equation $\frac{x + 3}{x- 3} = 4$?

  1. – 5

  2. 5

  3. 8

  4. – 8
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$\frac{x + 3}{x- 3} = 4$ x + 3 = 4 (x – 3) x + 3 = 4x – 12 x – 4x = – 12 – 3 – 3x = – 15 x = $\frac{-15}{3}$ x = 5

AI explanation

Cross-multiplying (x+3)/(x–3) = 4 gives x+3 = 4(x–3) = 4x–12. Rearranging gives –3x = –15, so x = 5. Substituting back confirms (5+3)/(5–3) = 8/2 = 4, verifying the solution.

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