Convert mixed number to fraction.
$$\dfrac{ -12 }{ 12 }$$ .Simplify $ \dfrac{ -12 }{ 12 } $ by dividing both -12 and 12 by their GCD, which is 12. GCD(-12, 12) = 12.
$$ \frac{ 12 }{ 12 } = \frac{ 12 : \color{blue}{ 12 } }{ 12 : \color{blue}{ 12 } } = \frac{ -1 }{ 1 } $$