Lineare Gleichungssysteme Aufgaben mit Lösungen

(a)   7*(6x + 5y = -36)

     + 6*(-7x + 3y = -11)

    42x + 35y = -252

+(-42x + 18y = -66)

                53y = -318

                     y = -6

-7x + 3*(-6) = -11

-7x -18 = -11

           x = -1

6*(-1) + 5*(-6) = -36

-6 -30 = 36

L= (-1 ; -6)

(b)  2x - 6y = 1

    - (2x - 2y = 2)

              -4y = -1

                  y = 0,25

x - 0,25 = 1

           x = 1,25

2*1,25 - 6*0,25 = 1

2,5 - 1,5 = 1