radix

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Usernameradix
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 #1
avatar+14538 
0

Hallo Anonymous,


hier findest du nützliche Informationen:


http://www.formelsammlung-mathe.de/prozentrechnung.html


Wenn du Beispielaufgaben sendest, werden wir sie dir gern erklären.


Gruß radix !

Mar 23, 2015
 #1
avatar+14538 
+5

$${\frac{\left({\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{1}}\right)}{\left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{4}}\right)}}{\mathtt{\,\small\textbf+\,}}{\frac{\left({\mathtt{7}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{5}}\right)}{\left({\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}}\right)}}$$     = 1    

 

$${\frac{\left({\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{1}}\right)}{\left({\mathtt{2}}{\mathtt{\,\times\,}}\left({\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}}\right)\right)}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{2}}{\mathtt{\,\times\,}}\left({\mathtt{7}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{5}}\right)}{\left({\mathtt{2}}{\mathtt{\,\times\,}}\left({\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}}\right)\right)}}$$    = 1             2. Bruch mit 2 erweitert

3x-1 + 14x -10   = 1*2*(x+2)                          mit dem Nenner multipliziert

17x -11 = 2x + 4

15x = 15       =>      x = 1

 

Probe:     $${\frac{\left({\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{1}}{\mathtt{\,-\,}}{\mathtt{1}}\right)}{\left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{1}}{\mathtt{\,\small\textbf+\,}}{\mathtt{4}}\right)}}{\mathtt{\,\small\textbf+\,}}{\frac{\left({\mathtt{7}}{\mathtt{\,\times\,}}{\mathtt{1}}{\mathtt{\,-\,}}{\mathtt{5}}\right)}{\left({\mathtt{1}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}}\right)}} = {\mathtt{1}}$$

Gruß radix !       

Mar 22, 2015