Question 1188933
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I presume you meant:


<pre>
1. (F → G) V H
2. ~G
3. ~H            |  ~F
</pre>

You need to number your statements and g is not the same thing as G.


<pre>
1. (F → G) V H
2. ~G
3. ~H            |  ~F
4. F → G         1,3   Disjunction Syllogism
5. ⸫ ~F          2,4   Modus Tollens
</pre>

																
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
*[illustration darwinfish.jpg]

From <https://www.algebra.com/cgi-bin/upload-illustration.mpl> 
I > Ø
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
								
{{n}\choose{r}}
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