Question

Tolong bantu jawab lg ya no 12 dan 13 pakai caranya :)

Answer 1

13. 2a = 2(2 3) =(4 6)
-2 2) -4 4
2a-b= (4 6) - (3 -4) = (1 10)
-4 4) 6 5 -10 -1
2a-b+c= (1 10) + (-1 -4) =(0 6)
-10 -1 3 2 -7 1