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zurück QA 2007 - Teil B: Aufgabengruppe III, Nr. 1

Löse folgende Gleichung:

7,04 * (x - 0,2 : 0,08) - 1,225 x = -800 * (-0,002) + 3 x - 0,125 * (1 + 8 x)

Lösung

7,04 * (x -     2,5     ) - 1,225 x =         1,6           + 3 x - 0,125 - x
     7,04 x   - 17,6      - 1,225 x =       1,475          + 2 x
     5,815 x  - 17,6                    =       1,475          + 2 x                  | - 2 x
     3,815 x   - 17,6                   =       1,475                                    | + 17,6
     3,815 x                               =      19,075                                   | : 3,815
              x                               =       5

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