Aufgabe 1 a)

 

 

2 (x – 1)                            =     (3x + 5)             Anwendung der Strategie 1

 

2x – 2                                =    0,5 (3x + 5)

 

2x – 2                                =    1,5x + 2,5            | + 2

 

2x                                       =    1,5x + 4,5            | – 1,5x

 

0,5x                                    =                4,5            | : 0,5

 

                      x                    =    9