Respuesta :

Apocrophon
36 - f - f - f - f = 0 can be represented as;
[tex] 36 + (- f - f - f - f) = 0\\
36 + (-4f)=0 [/tex]

From here you can solve if you need:
[tex] 36 -4f=0\\
-4f=-36\\
f=\frac{-36}{-4}=9 [/tex]

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