Question

Resolver essa expressão
48!+49! Sobre 50! =

Answer 1

$\frac{48!+49!}{50!} = \frac{48!+49 \cdot 48!}{50 \cdot 49 \cdot 48!} = \frac{\not 48! \cdot (1+49)}{50 \cdot 49 \cdot \not 48!} = \frac{\not 50}{\not 50 \cdot 49} = \boxed{\boxed{\frac{1}{49}}}$

Answer 2

48! + 49!     48!(1 + 49)
------------ = ---------------
    50!            50.49.48!

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48! . 50
-------------
50 . 49 . 48!
=============================
Cancelamos o 48! e o 50!
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  1
-----
 49
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