Question 197354
<font face="Garamond" size="+2">

You have your fraction upside-down.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{-7-4}{10-8} \neq \frac{-2}{11}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{-7-4}{10-8}  =\frac{-11}{2}]




John
*[tex \LARGE e^{i\pi} + 1 = 0]
</font>