Equations of the form $\dfrac{p}{q} = \dfrac{r}{s}$ with equal numerators ($p = r$) and unequal denominators ($q
e s$)

Question

Equations of the form $\dfrac{p}{q} = \dfrac{r}{s}$ with equal numerators ($p = r$) and unequal denominators ($q 
e s$) hold only when—

Accepted Answer

$p = 0$

Answer

$q = s$

Answer

$p = r 
e 0$

Answer

always

Equations of the form pq=rs\dfrac{p}{q} = \dfrac{r}{s}qp​=sr​ with equal numerators (p=rp = rp=r) and unequal denominators (q≠sq \ne sq=s) hold only when—