Solve $-\dfrac{x}{3} = 7$.

Solve $-\dfrac{x}{3} = 7$.
  1. $-21$
  2. $21$
  3. $-\dfrac{7}{3}$
  4. $\dfrac{1}{21}$

Solution

$x = -3 \times 7 = -21$.

Asked in: IMO

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