Question

решите умоляю! даю 10 баллов​

Answer 1

Ответ:

5)

{6a-12b=24,

{2a+24b=-20

=> 28b=-28 => b=-1

6a+12=24 => a=2

(2; -1)

6)

{2x-3y=48

{3x+2y=8

=> 13x=120 => x=120/13

3×120/13+2y=8 => y=-128/13

(120/13; -128/13)