Antwort
- 0,5x - 3y = 7.5 | * 5
- 6x + 5y = 8 | * 3
- 2,5x - 15y = 37.5
- 18x + 15y = 24 | Additionsverfahren
20,5 x = 61.5 | /20,5
x = 3
6 * 3 + 5y = 8 | -18
5y = -10 | /5
y = -2