The solution to the equation (-2/k)*-4=-1 (k= -8) is a negative in the denominator. Is that allowed? thanksenter image description here
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$\begingroup$Fractions are allowed to have negative numerators and/or denominators. Generally, for all $b\ne 0$, $$\frac {-a}{b}=\frac a{-b}=-\frac ab$$ It is apparent that the last notation is graphically more pleasant than the others.
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