Multiple choice

Solve the following equations and check your results. If $x = \cfrac{4}{5}\left ( x+10 \right)$, then $x = $

  1. $12$
  2. $112$
  3. $40$
  4. $39$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Solve x = (4/5)(x + 10). Multiply by 5: 5x = 4x + 40. Subtract 4x from both sides: x = 40.

AI explanation

Multiply both sides of the equation by 5 to clear the fraction, giving 5x = 4(x+10). Distribute the 4 to get 5x = 4x + 40. Subtracting 4x from both sides yields x = 40.

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